Introduce ScopedFPDF types in public/cpp/fpdf_scopers.h

Applies std::remove_ptr to the public API types so that we can
deduce a correct unique ptr type no matter how that API might
change away from void* usage.

Creates shorter names for std::unique_ptr<std::remove_pointer<>, ...>

Change-Id: I04a0ff43cb7d5a4d3867939a53a54c9cef00db86
Reviewed-on: https://pdfium-review.googlesource.com/31292
Reviewed-by: Lei Zhang <thestig@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>
Commit-Queue: Tom Sepez <tsepez@chromium.org>

7 files changed, 122 insertions, 205 deletions

diff --git a/fpdfsdk/fpdf_annot_embeddertest.cpp b/fpdfsdk/fpdf_annot_embeddertest.cpp
index 9d5c5548b6..13dc117929 100644
--- a/fpdfsdk/fpdf_annot_embeddertest.cpp
+++ b/fpdfsdk/fpdf_annot_embeddertest.cpp
@@ -8,7 +8,7 @@
 #include <vector>
 
 #include "core/fxcrt/fx_system.h"
-#include "public/cpp/fpdf_deleters.h"
+#include "public/cpp/fpdf_scopers.h"
 #include "public/fpdf_annot.h"
 #include "public/fpdf_edit.h"
 #include "public/fpdfview.h"
@@ -38,8 +38,7 @@ TEST_F(FPDFAnnotEmbeddertest, RenderAnnotWithOnlyRolloverAP) {
   // normal appearance defined, only its rollover appearance. In this case, its
   // normal appearance should be generated, allowing the highlight annotation to
   // still display.
-  std::unique_ptr<void, FPDFBitmapDeleter> bitmap =
-      RenderLoadedPageWithFlags(page, FPDF_ANNOT);
+  ScopedFPDFBitmap bitmap = RenderLoadedPageWithFlags(page, FPDF_ANNOT);
   CompareBitmap(bitmap.get(), 612, 792, "dc98f06da047bd8aabfa99562d2cbd1e");
 
   UnloadPage(page);
@@ -52,8 +51,7 @@ TEST_F(FPDFAnnotEmbeddertest, RenderMultilineMarkupAnnotWithoutAP) {
   FPDF_PAGE page = LoadPage(0);
   ASSERT_TRUE(page);
 
-  std::unique_ptr<void, FPDFBitmapDeleter> bitmap =
-      RenderLoadedPageWithFlags(page, FPDF_ANNOT);
+  ScopedFPDFBitmap bitmap = RenderLoadedPageWithFlags(page, FPDF_ANNOT);
   CompareBitmap(bitmap.get(), 595, 842, md5_hash);
 
   UnloadPage(page);
@@ -73,8 +71,7 @@ TEST_F(FPDFAnnotEmbeddertest, ExtractHighlightLongContent) {
 
   // Check that the annotation is of type "highlight".
   {
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
-        FPDFPage_GetAnnot(page, 0));
+    ScopedFPDFAnnotation annot(FPDFPage_GetAnnot(page, 0));
     ASSERT_TRUE(annot);
     EXPECT_EQ(FPDF_ANNOT_HIGHLIGHT, FPDFAnnot_GetSubtype(annot.get()));
 
@@ -157,8 +154,7 @@ TEST_F(FPDFAnnotEmbeddertest, ExtractInkMultiple) {
 
   {
     // Check that the third annotation is of type "ink".
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
-        FPDFPage_GetAnnot(page, 2));
+    ScopedFPDFAnnotation annot(FPDFPage_GetAnnot(page, 2));
     ASSERT_TRUE(annot);
     EXPECT_EQ(FPDF_ANNOT_INK, FPDFAnnot_GetSubtype(annot.get()));
 
@@ -211,8 +207,7 @@ TEST_F(FPDFAnnotEmbeddertest, AddFirstTextAnnotation) {
 
   {
     // Add a text annotation to the page.
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
-        FPDFPage_CreateAnnot(page, FPDF_ANNOT_TEXT));
+    ScopedFPDFAnnotation annot(FPDFPage_CreateAnnot(page, FPDF_ANNOT_TEXT));
     ASSERT_TRUE(annot);
 
     // Check that there is now 1 annotations on this page.
@@ -223,8 +218,7 @@ TEST_F(FPDFAnnotEmbeddertest, AddFirstTextAnnotation) {
   }
 
   {
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
-        FPDFPage_GetAnnot(page, 0));
+    ScopedFPDFAnnotation annot(FPDFPage_GetAnnot(page, 0));
     ASSERT_TRUE(annot);
     EXPECT_EQ(FPDF_ANNOT_TEXT, FPDFAnnot_GetSubtype(annot.get()));
 
@@ -300,8 +294,7 @@ TEST_F(FPDFAnnotEmbeddertest, AddAndSaveUnderlineAnnotation) {
   EXPECT_EQ(1, FPDFPage_GetAnnotCount(page));
   FS_QUADPOINTSF quadpoints;
   {
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
-        FPDFPage_GetAnnot(page, 0));
+    ScopedFPDFAnnotation annot(FPDFPage_GetAnnot(page, 0));
     ASSERT_TRUE(annot);
     ASSERT_TRUE(FPDFAnnot_GetAttachmentPoints(annot.get(), 0, &quadpoints));
     EXPECT_EQ(115.802643f, quadpoints.x1);
@@ -312,7 +305,7 @@ TEST_F(FPDFAnnotEmbeddertest, AddAndSaveUnderlineAnnotation) {
 
   // Add an underline annotation to the page and set its quadpoints.
   {
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
+    ScopedFPDFAnnotation annot(
         FPDFPage_CreateAnnot(page, FPDF_ANNOT_UNDERLINE));
     ASSERT_TRUE(annot);
     quadpoints.x1 = 140.802643f;
@@ -337,8 +330,7 @@ TEST_F(FPDFAnnotEmbeddertest, AddAndSaveUnderlineAnnotation) {
   {
     // Check that the second annotation is an underline annotation and verify
     // its quadpoints.
-    std::unique_ptr<void, FPDFAnnotationDeleter> new_annot(
-        FPDFPage_GetAnnot(page, 1));
+    ScopedFPDFAnnotation new_annot(FPDFPage_GetAnnot(page, 1));
     ASSERT_TRUE(new_annot);
     EXPECT_EQ(FPDF_ANNOT_UNDERLINE, FPDFAnnot_GetSubtype(new_annot.get()));
     FS_QUADPOINTSF new_quadpoints;
@@ -462,8 +454,7 @@ TEST_F(FPDFAnnotEmbeddertest, ModifyRectQuadpointsWithAP) {
 
   // Check that the original file renders correctly.
   {
-    std::unique_ptr<void, FPDFBitmapDeleter> bitmap =
-        RenderLoadedPageWithFlags(page, FPDF_ANNOT);
+    ScopedFPDFBitmap bitmap = RenderLoadedPageWithFlags(page, FPDF_ANNOT);
     CompareBitmap(bitmap.get(), 612, 792, md5_original);
   }
 
@@ -472,8 +463,7 @@ TEST_F(FPDFAnnotEmbeddertest, ModifyRectQuadpointsWithAP) {
 
   // Retrieve the highlight annotation which has its AP stream already defined.
   {
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
-        FPDFPage_GetAnnot(page, 0));
+    ScopedFPDFAnnotation annot(FPDFPage_GetAnnot(page, 0));
     ASSERT_TRUE(annot);
     EXPECT_EQ(FPDF_ANNOT_HIGHLIGHT, FPDFAnnot_GetSubtype(annot.get()));
 
@@ -504,8 +494,7 @@ TEST_F(FPDFAnnotEmbeddertest, ModifyRectQuadpointsWithAP) {
 
     // Check that updating quadpoints does not change the annotation's position.
     {
-      std::unique_ptr<void, FPDFBitmapDeleter> bitmap =
-          RenderLoadedPageWithFlags(page, FPDF_ANNOT);
+      ScopedFPDFBitmap bitmap = RenderLoadedPageWithFlags(page, FPDF_ANNOT);
       CompareBitmap(bitmap.get(), 612, 792, md5_original);
     }
 
@@ -526,15 +515,13 @@ TEST_F(FPDFAnnotEmbeddertest, ModifyRectQuadpointsWithAP) {
 
   // Check that updating the rectangle changes the annotation's position.
   {
-    std::unique_ptr<void, FPDFBitmapDeleter> bitmap =
-        RenderLoadedPageWithFlags(page, FPDF_ANNOT);
+    ScopedFPDFBitmap bitmap = RenderLoadedPageWithFlags(page, FPDF_ANNOT);
     CompareBitmap(bitmap.get(), 612, 792, md5_modified_highlight);
   }
 
   {
     // Retrieve the square annotation which has its AP stream already defined.
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
-        FPDFPage_GetAnnot(page, 2));
+    ScopedFPDFAnnotation annot(FPDFPage_GetAnnot(page, 2));
     ASSERT_TRUE(annot);
     EXPECT_EQ(FPDF_ANNOT_SQUARE, FPDFAnnot_GetSubtype(annot.get()));
 
@@ -548,8 +535,7 @@ TEST_F(FPDFAnnotEmbeddertest, ModifyRectQuadpointsWithAP) {
 
     // Check that updating the rectangle changes the square annotation's
     // position.
-    std::unique_ptr<void, FPDFBitmapDeleter> bitmap =
-        RenderLoadedPageWithFlags(page, FPDF_ANNOT);
+    ScopedFPDFBitmap bitmap = RenderLoadedPageWithFlags(page, FPDF_ANNOT);
     CompareBitmap(bitmap.get(), 612, 792, md5_modified_square);
   }
 
@@ -562,8 +548,7 @@ TEST_F(FPDFAnnotEmbeddertest, CountAttachmentPoints) {
   FPDF_PAGE page = LoadPage(0);
   ASSERT_TRUE(page);
   {
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
-        FPDFPage_GetAnnot(page, 0));
+    ScopedFPDFAnnotation annot(FPDFPage_GetAnnot(page, 0));
     ASSERT_TRUE(annot);
 
     // This is a three line annotation.
@@ -589,22 +574,19 @@ TEST_F(FPDFAnnotEmbeddertest, RemoveAnnotation) {
 
   // Check that the annotations have the expected rectangle coordinates.
   {
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
-        FPDFPage_GetAnnot(page, 0));
+    ScopedFPDFAnnotation annot(FPDFPage_GetAnnot(page, 0));
     ASSERT_TRUE(FPDFAnnot_GetRect(annot.get(), &rect));
     EXPECT_NEAR(86.1971f, rect.left, 0.001f);
   }
 
   {
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
-        FPDFPage_GetAnnot(page, 1));
+    ScopedFPDFAnnotation annot(FPDFPage_GetAnnot(page, 1));
     ASSERT_TRUE(FPDFAnnot_GetRect(annot.get(), &rect));
     EXPECT_NEAR(149.8127f, rect.left, 0.001f);
   }
 
   {
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
-        FPDFPage_GetAnnot(page, 2));
+    ScopedFPDFAnnotation annot(FPDFPage_GetAnnot(page, 2));
     ASSERT_TRUE(FPDFAnnot_GetRect(annot.get(), &rect));
     EXPECT_NEAR(351.8204f, rect.left, 0.001f);
   }
@@ -643,15 +625,13 @@ TEST_F(FPDFAnnotEmbeddertest, RemoveAnnotation) {
   // Check that the remaining 2 annotations are the original 1st and 3rd ones
   // by verifying their rectangle coordinates.
   {
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
-        FPDFPage_GetAnnot(new_page, 0));
+    ScopedFPDFAnnotation annot(FPDFPage_GetAnnot(new_page, 0));
     ASSERT_TRUE(FPDFAnnot_GetRect(annot.get(), &rect));
     EXPECT_NEAR(86.1971f, rect.left, 0.001f);
   }
 
   {
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
-        FPDFPage_GetAnnot(new_page, 1));
+    ScopedFPDFAnnotation annot(FPDFPage_GetAnnot(new_page, 1));
     ASSERT_TRUE(FPDFAnnot_GetRect(annot.get(), &rect));
     EXPECT_NEAR(351.8204f, rect.left, 0.001f);
   }
@@ -680,15 +660,13 @@ TEST_F(FPDFAnnotEmbeddertest, AddAndModifyPath) {
 
   // Check that the page renders correctly.
   {
-    std::unique_ptr<void, FPDFBitmapDeleter> bitmap =
-        RenderLoadedPageWithFlags(page, FPDF_ANNOT);
+    ScopedFPDFBitmap bitmap = RenderLoadedPageWithFlags(page, FPDF_ANNOT);
     CompareBitmap(bitmap.get(), 595, 842, md5_original);
   }
 
   {
     // Retrieve the stamp annotation which has its AP stream already defined.
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
-        FPDFPage_GetAnnot(page, 0));
+    ScopedFPDFAnnotation annot(FPDFPage_GetAnnot(page, 0));
     ASSERT_TRUE(annot);
 
     // Check that this annotation has one path object and retrieve it.
@@ -706,8 +684,7 @@ TEST_F(FPDFAnnotEmbeddertest, AddAndModifyPath) {
 
     // Check that the page with the modified annotation renders correctly.
     {
-      std::unique_ptr<void, FPDFBitmapDeleter> bitmap =
-          RenderLoadedPageWithFlags(page, FPDF_ANNOT);
+      ScopedFPDFBitmap bitmap = RenderLoadedPageWithFlags(page, FPDF_ANNOT);
       CompareBitmap(bitmap.get(), 595, 842, md5_modified_path);
     }
 
@@ -726,8 +703,7 @@ TEST_F(FPDFAnnotEmbeddertest, AddAndModifyPath) {
 
     // Check that the page with an annotation with two paths renders correctly.
     {
-      std::unique_ptr<void, FPDFBitmapDeleter> bitmap =
-          RenderLoadedPageWithFlags(page, FPDF_ANNOT);
+      ScopedFPDFBitmap bitmap = RenderLoadedPageWithFlags(page, FPDF_ANNOT);
       CompareBitmap(bitmap.get(), 595, 842, md5_two_paths);
     }
 
@@ -739,8 +715,7 @@ TEST_F(FPDFAnnotEmbeddertest, AddAndModifyPath) {
 
   // Check that the page renders the same as before.
   {
-    std::unique_ptr<void, FPDFBitmapDeleter> bitmap =
-        RenderLoadedPageWithFlags(page, FPDF_ANNOT);
+    ScopedFPDFBitmap bitmap = RenderLoadedPageWithFlags(page, FPDF_ANNOT);
     CompareBitmap(bitmap.get(), 595, 842, md5_modified_path);
   }
 
@@ -748,8 +723,7 @@ TEST_F(FPDFAnnotEmbeddertest, AddAndModifyPath) {
 
   {
     // Create another stamp annotation and set its annotation rectangle.
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
-        FPDFPage_CreateAnnot(page, FPDF_ANNOT_STAMP));
+    ScopedFPDFAnnotation annot(FPDFPage_CreateAnnot(page, FPDF_ANNOT_STAMP));
     ASSERT_TRUE(annot);
     rect.left = 200.f;
     rect.bottom = 400.f;
@@ -791,8 +765,7 @@ TEST_F(FPDFAnnotEmbeddertest, AddAndModifyPath) {
   EXPECT_EQ(3, FPDFPage_GetAnnotCount(page));
 
   {
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
-        FPDFPage_GetAnnot(page, 2));
+    ScopedFPDFAnnotation annot(FPDFPage_GetAnnot(page, 2));
     ASSERT_TRUE(annot);
     EXPECT_EQ(1, FPDFAnnot_GetObjectCount(annot.get()));
 
@@ -817,15 +790,13 @@ TEST_F(FPDFAnnotEmbeddertest, ModifyAnnotationFlags) {
 
   // Check that the page renders correctly.
   {
-    std::unique_ptr<void, FPDFBitmapDeleter> bitmap =
-        RenderLoadedPageWithFlags(page, FPDF_ANNOT);
+    ScopedFPDFBitmap bitmap = RenderLoadedPageWithFlags(page, FPDF_ANNOT);
     CompareBitmap(bitmap.get(), 612, 792, "dc98f06da047bd8aabfa99562d2cbd1e");
   }
 
   {
     // Retrieve the annotation.
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
-        FPDFPage_GetAnnot(page, 0));
+    ScopedFPDFAnnotation annot(FPDFPage_GetAnnot(page, 0));
     ASSERT_TRUE(annot);
 
     // Check that the original flag values are as expected.
@@ -842,8 +813,7 @@ TEST_F(FPDFAnnotEmbeddertest, ModifyAnnotationFlags) {
 
     // Check that the page renders correctly without rendering the annotation.
     {
-      std::unique_ptr<void, FPDFBitmapDeleter> bitmap =
-          RenderLoadedPageWithFlags(page, FPDF_ANNOT);
+      ScopedFPDFBitmap bitmap = RenderLoadedPageWithFlags(page, FPDF_ANNOT);
       CompareBitmap(bitmap.get(), 612, 792, "1940568c9ba33bac5d0b1ee9558c76b3");
     }
 
@@ -858,8 +828,7 @@ TEST_F(FPDFAnnotEmbeddertest, ModifyAnnotationFlags) {
 
     // Check that the page renders correctly as before.
     {
-      std::unique_ptr<void, FPDFBitmapDeleter> bitmap =
-          RenderLoadedPageWithFlags(page, FPDF_ANNOT);
+      ScopedFPDFBitmap bitmap = RenderLoadedPageWithFlags(page, FPDF_ANNOT);
       CompareBitmap(bitmap.get(), 612, 792, "dc98f06da047bd8aabfa99562d2cbd1e");
     }
   }
@@ -886,8 +855,7 @@ TEST_F(FPDFAnnotEmbeddertest, AddAndModifyImage) {
 
   // Check that the page renders correctly.
   {
-    std::unique_ptr<void, FPDFBitmapDeleter> bitmap =
-        RenderLoadedPageWithFlags(page, FPDF_ANNOT);
+    ScopedFPDFBitmap bitmap = RenderLoadedPageWithFlags(page, FPDF_ANNOT);
     CompareBitmap(bitmap.get(), 595, 842, md5_original);
   }
 
@@ -896,8 +864,7 @@ TEST_F(FPDFAnnotEmbeddertest, AddAndModifyImage) {
 
   {
     // Create a stamp annotation and set its annotation rectangle.
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
-        FPDFPage_CreateAnnot(page, FPDF_ANNOT_STAMP));
+    ScopedFPDFAnnotation annot(FPDFPage_CreateAnnot(page, FPDF_ANNOT_STAMP));
     ASSERT_TRUE(annot);
     FS_RECTF rect;
     rect.left = 200.f;
@@ -922,15 +889,13 @@ TEST_F(FPDFAnnotEmbeddertest, AddAndModifyImage) {
 
   // Check that the page renders correctly with the new image object.
   {
-    std::unique_ptr<void, FPDFBitmapDeleter> bitmap =
-        RenderLoadedPageWithFlags(page, FPDF_ANNOT);
+    ScopedFPDFBitmap bitmap = RenderLoadedPageWithFlags(page, FPDF_ANNOT);
     CompareBitmap(bitmap.get(), 595, 842, md5_new_image);
   }
 
   {
     // Retrieve the newly added stamp annotation and its image object.
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
-        FPDFPage_GetAnnot(page, 2));
+    ScopedFPDFAnnotation annot(FPDFPage_GetAnnot(page, 2));
     ASSERT_TRUE(annot);
     EXPECT_EQ(1, FPDFAnnot_GetObjectCount(annot.get()));
     FPDF_PAGEOBJECT image_object = FPDFAnnot_GetObject(annot.get(), 0);
@@ -971,15 +936,13 @@ TEST_F(FPDFAnnotEmbeddertest, AddAndModifyText) {
 
   // Check that the page renders correctly.
   {
-    std::unique_ptr<void, FPDFBitmapDeleter> bitmap =
-        RenderLoadedPageWithFlags(page, FPDF_ANNOT);
+    ScopedFPDFBitmap bitmap = RenderLoadedPageWithFlags(page, FPDF_ANNOT);
     CompareBitmap(bitmap.get(), 595, 842, md5_original);
   }
 
   {
     // Create a stamp annotation and set its annotation rectangle.
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
-        FPDFPage_CreateAnnot(page, FPDF_ANNOT_STAMP));
+    ScopedFPDFAnnotation annot(FPDFPage_CreateAnnot(page, FPDF_ANNOT_STAMP));
     ASSERT_TRUE(annot);
     FS_RECTF rect;
     rect.left = 200.f;
@@ -1002,15 +965,13 @@ TEST_F(FPDFAnnotEmbeddertest, AddAndModifyText) {
 
   // Check that the page renders correctly with the new text object.
   {
-    std::unique_ptr<void, FPDFBitmapDeleter> bitmap =
-        RenderLoadedPageWithFlags(page, FPDF_ANNOT);
+    ScopedFPDFBitmap bitmap = RenderLoadedPageWithFlags(page, FPDF_ANNOT);
     CompareBitmap(bitmap.get(), 595, 842, md5_new_text);
   }
 
   {
     // Retrieve the newly added stamp annotation and its text object.
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
-        FPDFPage_GetAnnot(page, 2));
+    ScopedFPDFAnnotation annot(FPDFPage_GetAnnot(page, 2));
     ASSERT_TRUE(annot);
     EXPECT_EQ(1, FPDFAnnot_GetObjectCount(annot.get()));
     FPDF_PAGEOBJECT text_object = FPDFAnnot_GetObject(annot.get(), 0);
@@ -1025,16 +986,14 @@ TEST_F(FPDFAnnotEmbeddertest, AddAndModifyText) {
 
   // Check that the page renders correctly with the modified text object.
   {
-    std::unique_ptr<void, FPDFBitmapDeleter> bitmap =
-        RenderLoadedPageWithFlags(page, FPDF_ANNOT);
+    ScopedFPDFBitmap bitmap = RenderLoadedPageWithFlags(page, FPDF_ANNOT);
     CompareBitmap(bitmap.get(), 595, 842, md5_modified_text);
   }
 
   // Remove the new annotation, and check that the page renders as before.
   EXPECT_TRUE(FPDFPage_RemoveAnnot(page, 2));
   {
-    std::unique_ptr<void, FPDFBitmapDeleter> bitmap =
-        RenderLoadedPageWithFlags(page, FPDF_ANNOT);
+    ScopedFPDFBitmap bitmap = RenderLoadedPageWithFlags(page, FPDF_ANNOT);
     CompareBitmap(bitmap.get(), 595, 842, md5_original);
   }
 
@@ -1052,8 +1011,7 @@ TEST_F(FPDFAnnotEmbeddertest, GetSetStringValue) {
 
   {
     // Retrieve the first annotation.
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
-        FPDFPage_GetAnnot(page, 0));
+    ScopedFPDFAnnotation annot(FPDFPage_GetAnnot(page, 0));
     ASSERT_TRUE(annot);
 
     // Check that a non-existent key does not exist.
@@ -1107,8 +1065,7 @@ TEST_F(FPDFAnnotEmbeddertest, GetSetStringValue) {
   page = LoadSavedPage(0);
   VerifySavedRendering(page, 595, 842, md5);
   {
-    std::unique_ptr<void, FPDFAnnotationDeleter> new_annot(
-        FPDFPage_GetAnnot(page, 0));
+    ScopedFPDFAnnotation new_annot(FPDFPage_GetAnnot(page, 0));
 
     // Check that the string value of the modified date is the newly-set value.
     EXPECT_EQ(FPDF_OBJECT_STRING,
@@ -1133,8 +1090,7 @@ TEST_F(FPDFAnnotEmbeddertest, GetSetAP) {
 
   {
     // Retrieve the first annotation.
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
-        FPDFPage_GetAnnot(page, 0));
+    ScopedFPDFAnnotation annot(FPDFPage_GetAnnot(page, 0));
     ASSERT_TRUE(annot);
 
     // Check that the string value of an AP returns the expected length.
@@ -1230,8 +1186,7 @@ TEST_F(FPDFAnnotEmbeddertest, GetSetAP) {
   OpenSavedDocument();
   page = LoadSavedPage(0);
   {
-    std::unique_ptr<void, FPDFAnnotationDeleter> new_annot(
-        FPDFPage_GetAnnot(page, 0));
+    ScopedFPDFAnnotation new_annot(FPDFPage_GetAnnot(page, 0));
 
     // Check that the new annotation value is equal to the value we set before
     // saving.
@@ -1258,8 +1213,7 @@ TEST_F(FPDFAnnotEmbeddertest, RemoveOptionalAP) {
 
   {
     // Retrieve the first annotation.
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
-        FPDFPage_GetAnnot(page, 0));
+    ScopedFPDFAnnotation annot(FPDFPage_GetAnnot(page, 0));
     ASSERT_TRUE(annot);
 
     // Set Down AP. Normal AP is already set.
@@ -1295,8 +1249,7 @@ TEST_F(FPDFAnnotEmbeddertest, RemoveRequiredAP) {
 
   {
     // Retrieve the first annotation.
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
-        FPDFPage_GetAnnot(page, 0));
+    ScopedFPDFAnnotation annot(FPDFPage_GetAnnot(page, 0));
     ASSERT_TRUE(annot);
 
     // Set Down AP. Normal AP is already set.
@@ -1331,8 +1284,7 @@ TEST_F(FPDFAnnotEmbeddertest, ExtractLinkedAnnotations) {
 
   {
     // Retrieve the highlight annotation which has its popup defined.
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
-        FPDFPage_GetAnnot(page, 0));
+    ScopedFPDFAnnotation annot(FPDFPage_GetAnnot(page, 0));
     ASSERT_TRUE(annot);
     EXPECT_EQ(FPDF_ANNOT_HIGHLIGHT, FPDFAnnot_GetSubtype(annot.get()));
     EXPECT_EQ(0, FPDFPage_GetAnnotIndex(page, annot.get()));
@@ -1342,7 +1294,7 @@ TEST_F(FPDFAnnotEmbeddertest, ExtractLinkedAnnotations) {
               FPDFAnnot_GetValueType(annot.get(), kPopupKey));
 
     // Retrieve and verify the popup of the highlight annotation.
-    std::unique_ptr<void, FPDFAnnotationDeleter> popup(
+    ScopedFPDFAnnotation popup(
         FPDFAnnot_GetLinkedAnnot(annot.get(), kPopupKey));
     ASSERT_TRUE(popup);
     EXPECT_EQ(FPDF_ANNOT_POPUP, FPDFAnnot_GetSubtype(popup.get()));
@@ -1378,8 +1330,7 @@ TEST_F(FPDFAnnotEmbeddertest, GetFormFieldFlagsTextField) {
 
   {
     // Retrieve the first annotation: user-editable text field.
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
-        FPDFPage_GetAnnot(page, 0));
+    ScopedFPDFAnnotation annot(FPDFPage_GetAnnot(page, 0));
     ASSERT_TRUE(annot);
 
     // Check that the flag values are as expected.
@@ -1389,8 +1340,7 @@ TEST_F(FPDFAnnotEmbeddertest, GetFormFieldFlagsTextField) {
 
   {
     // Retrieve the second annotation: read-only text field.
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
-        FPDFPage_GetAnnot(page, 1));
+    ScopedFPDFAnnotation annot(FPDFPage_GetAnnot(page, 1));
     ASSERT_TRUE(annot);
 
     // Check that the flag values are as expected.
@@ -1409,8 +1359,7 @@ TEST_F(FPDFAnnotEmbeddertest, GetFormFieldFlagsComboBox) {
 
   {
     // Retrieve the first annotation: user-editable combobox.
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
-        FPDFPage_GetAnnot(page, 0));
+    ScopedFPDFAnnotation annot(FPDFPage_GetAnnot(page, 0));
     ASSERT_TRUE(annot);
 
     // Check that the flag values are as expected.
@@ -1422,8 +1371,7 @@ TEST_F(FPDFAnnotEmbeddertest, GetFormFieldFlagsComboBox) {
 
   {
     // Retrieve the second annotation: regular combobox.
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
-        FPDFPage_GetAnnot(page, 1));
+    ScopedFPDFAnnotation annot(FPDFPage_GetAnnot(page, 1));
     ASSERT_TRUE(annot);
 
     // Check that the flag values are as expected.
@@ -1435,8 +1383,7 @@ TEST_F(FPDFAnnotEmbeddertest, GetFormFieldFlagsComboBox) {
 
   {
     // Retrieve the third annotation: read-only combobox.
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
-        FPDFPage_GetAnnot(page, 2));
+    ScopedFPDFAnnotation annot(FPDFPage_GetAnnot(page, 2));
     ASSERT_TRUE(annot);
 
     // Check that the flag values are as expected.
@@ -1471,7 +1418,7 @@ TEST_F(FPDFAnnotEmbeddertest, GetFormAnnotAndCheckFlagsTextField) {
 
   {
     // Retrieve user-editable text field annotation.
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
+    ScopedFPDFAnnotation annot(
         FPDFAnnot_GetFormFieldAtPoint(form_handle(), page, 105, 118));
     ASSERT_TRUE(annot);
 
@@ -1482,7 +1429,7 @@ TEST_F(FPDFAnnotEmbeddertest, GetFormAnnotAndCheckFlagsTextField) {
 
   {
     // Retrieve read-only text field annotation.
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
+    ScopedFPDFAnnotation annot(
         FPDFAnnot_GetFormFieldAtPoint(form_handle(), page, 105, 202));
     ASSERT_TRUE(annot);
 
@@ -1502,7 +1449,7 @@ TEST_F(FPDFAnnotEmbeddertest, GetFormAnnotAndCheckFlagsComboBox) {
 
   {
     // Retrieve user-editable combobox annotation.
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
+    ScopedFPDFAnnotation annot(
         FPDFAnnot_GetFormFieldAtPoint(form_handle(), page, 102, 363));
     ASSERT_TRUE(annot);
 
@@ -1515,7 +1462,7 @@ TEST_F(FPDFAnnotEmbeddertest, GetFormAnnotAndCheckFlagsComboBox) {
 
   {
     // Retrieve regular combobox annotation.
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
+    ScopedFPDFAnnotation annot(
         FPDFAnnot_GetFormFieldAtPoint(form_handle(), page, 102, 413));
     ASSERT_TRUE(annot);
 
@@ -1528,7 +1475,7 @@ TEST_F(FPDFAnnotEmbeddertest, GetFormAnnotAndCheckFlagsComboBox) {
 
   {
     // Retrieve read-only combobox annotation.
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
+    ScopedFPDFAnnotation annot(
         FPDFAnnot_GetFormFieldAtPoint(form_handle(), page, 102, 513));
     ASSERT_TRUE(annot);
 
diff --git a/fpdfsdk/fpdf_edit_embeddertest.cpp b/fpdfsdk/fpdf_edit_embeddertest.cpp
index 3da57ab737..0604cdbe71 100644
--- a/fpdfsdk/fpdf_edit_embeddertest.cpp
+++ b/fpdfsdk/fpdf_edit_embeddertest.cpp
@@ -15,7 +15,7 @@
 #include "core/fpdfapi/parser/cpdf_stream.h"
 #include "core/fxcrt/fx_system.h"
 #include "fpdfsdk/cpdfsdk_helpers.h"
-#include "public/cpp/fpdf_deleters.h"
+#include "public/cpp/fpdf_scopers.h"
 #include "public/fpdf_annot.h"
 #include "public/fpdf_edit.h"
 #include "public/fpdfview.h"
@@ -192,7 +192,7 @@ TEST_F(FPDFEditEmbeddertest, RasterizePDF) {
   const char kAllBlackMd5sum[] = "5708fc5c4a8bd0abde99c8e8f0390615";
 
   // Get the bitmap for the original document/
-  std::unique_ptr<void, FPDFBitmapDeleter> orig_bitmap;
+  ScopedFPDFBitmap orig_bitmap;
   {
     EXPECT_TRUE(OpenDocument("black.pdf"));
     FPDF_PAGE orig_page = LoadPage(0);
@@ -243,8 +243,7 @@ TEST_F(FPDFEditEmbeddertest, AddPaths) {
   EXPECT_TRUE(FPDFPath_SetDrawMode(red_rect, FPDF_FILLMODE_ALTERNATE, 0));
   FPDFPage_InsertObject(page, red_rect);
   {
-    std::unique_ptr<void, FPDFBitmapDeleter> page_bitmap =
-        RenderPageWithFlags(page, nullptr, 0);
+    ScopedFPDFBitmap page_bitmap = RenderPageWithFlags(page, nullptr, 0);
     CompareBitmap(page_bitmap.get(), 612, 792,
                   "66d02eaa6181e2c069ce2ea99beda497");
   }
@@ -307,8 +306,7 @@ TEST_F(FPDFEditEmbeddertest, AddPaths) {
   EXPECT_TRUE(FPDFPath_SetDrawMode(green_rect, FPDF_FILLMODE_WINDING, 0));
   FPDFPage_InsertObject(page, green_rect);
   {
-    std::unique_ptr<void, FPDFBitmapDeleter> page_bitmap =
-        RenderPageWithFlags(page, nullptr, 0);
+    ScopedFPDFBitmap page_bitmap = RenderPageWithFlags(page, nullptr, 0);
     CompareBitmap(page_bitmap.get(), 612, 792,
                   "7b0b87604594e773add528fae567a558");
   }
@@ -348,8 +346,7 @@ TEST_F(FPDFEditEmbeddertest, AddPaths) {
 
   FPDFPage_InsertObject(page, black_path);
   {
-    std::unique_ptr<void, FPDFBitmapDeleter> page_bitmap =
-        RenderPageWithFlags(page, nullptr, 0);
+    ScopedFPDFBitmap page_bitmap = RenderPageWithFlags(page, nullptr, 0);
     CompareBitmap(page_bitmap.get(), 612, 792,
                   "eadc8020a14dfcf091da2688733d8806");
   }
@@ -367,8 +364,7 @@ TEST_F(FPDFEditEmbeddertest, AddPaths) {
   FPDFPage_InsertObject(page, blue_path);
   const char kLastMD5[] = "9823e1a21bd9b72b6a442ba4f12af946";
   {
-    std::unique_ptr<void, FPDFBitmapDeleter> page_bitmap =
-        RenderPageWithFlags(page, nullptr, 0);
+    ScopedFPDFBitmap page_bitmap = RenderPageWithFlags(page, nullptr, 0);
     CompareBitmap(page_bitmap.get(), 612, 792, kLastMD5);
   }
 
@@ -396,8 +392,7 @@ TEST_F(FPDFEditEmbeddertest, RemovePageObject) {
 #else
     const char kOriginalMD5[] = "2baa4c0e1758deba1b9c908e1fbd04ed";
 #endif
-    std::unique_ptr<void, FPDFBitmapDeleter> page_bitmap =
-        RenderPageWithFlags(page, nullptr, 0);
+    ScopedFPDFBitmap page_bitmap = RenderPageWithFlags(page, nullptr, 0);
     CompareBitmap(page_bitmap.get(), 200, 200, kOriginalMD5);
   }
 
@@ -416,8 +411,7 @@ TEST_F(FPDFEditEmbeddertest, RemovePageObject) {
 #else
     const char kRemovedMD5[] = "b76df015fe88009c3c342395df96abf1";
 #endif
-    std::unique_ptr<void, FPDFBitmapDeleter> page_bitmap =
-        RenderPageWithFlags(page, nullptr, 0);
+    ScopedFPDFBitmap page_bitmap = RenderPageWithFlags(page, nullptr, 0);
     CompareBitmap(page_bitmap.get(), 200, 200, kRemovedMD5);
   }
   ASSERT_EQ(1, FPDFPage_CountObjects(page));
@@ -441,8 +435,7 @@ TEST_F(FPDFEditEmbeddertest, RemoveMarkedObjectsPrime) {
 #else
     const char kOriginalMD5[] = "2edc6e70d54889aa0c0b7bdf3e168f86";
 #endif
-    std::unique_ptr<void, FPDFBitmapDeleter> page_bitmap =
-        RenderPageWithFlags(page, nullptr, 0);
+    ScopedFPDFBitmap page_bitmap = RenderPageWithFlags(page, nullptr, 0);
     CompareBitmap(page_bitmap.get(), 200, 200, kOriginalMD5);
   }
 
@@ -526,8 +519,7 @@ TEST_F(FPDFEditEmbeddertest, RemoveMarkedObjectsPrime) {
 #else
     const char kNonPrimesMD5[] = "33d9c45bec41ead92a295e252f6b7922";
 #endif
-    std::unique_ptr<void, FPDFBitmapDeleter> page_bitmap =
-        RenderPageWithFlags(page, nullptr, 0);
+    ScopedFPDFBitmap page_bitmap = RenderPageWithFlags(page, nullptr, 0);
     CompareBitmap(page_bitmap.get(), 200, 200, kNonPrimesMD5);
   }
 
@@ -601,8 +593,7 @@ TEST_F(FPDFEditEmbeddertest, AddAndRemovePaths) {
   // Render the blank page and verify it's a blank bitmap.
   const char kBlankMD5[] = "1940568c9ba33bac5d0b1ee9558c76b3";
   {
-    std::unique_ptr<void, FPDFBitmapDeleter> page_bitmap =
-        RenderPageWithFlags(page, nullptr, 0);
+    ScopedFPDFBitmap page_bitmap = RenderPageWithFlags(page, nullptr, 0);
     CompareBitmap(page_bitmap.get(), 612, 792, kBlankMD5);
   }
   ASSERT_EQ(0, FPDFPage_CountObjects(page));
@@ -615,8 +606,7 @@ TEST_F(FPDFEditEmbeddertest, AddAndRemovePaths) {
   FPDFPage_InsertObject(page, red_rect);
   const char kRedRectangleMD5[] = "66d02eaa6181e2c069ce2ea99beda497";
   {
-    std::unique_ptr<void, FPDFBitmapDeleter> page_bitmap =
-        RenderPageWithFlags(page, nullptr, 0);
+    ScopedFPDFBitmap page_bitmap = RenderPageWithFlags(page, nullptr, 0);
     CompareBitmap(page_bitmap.get(), 612, 792, kRedRectangleMD5);
   }
   EXPECT_EQ(1, FPDFPage_CountObjects(page));
@@ -625,8 +615,7 @@ TEST_F(FPDFEditEmbeddertest, AddAndRemovePaths) {
   // back to a blank one.
   EXPECT_TRUE(FPDFPage_RemoveObject(page, red_rect));
   {
-    std::unique_ptr<void, FPDFBitmapDeleter> page_bitmap =
-        RenderPageWithFlags(page, nullptr, 0);
+    ScopedFPDFBitmap page_bitmap = RenderPageWithFlags(page, nullptr, 0);
     CompareBitmap(page_bitmap.get(), 612, 792, kBlankMD5);
   }
   EXPECT_EQ(0, FPDFPage_CountObjects(page));
@@ -687,7 +676,7 @@ TEST_F(FPDFEditEmbeddertest, PathOnTopOfText) {
   FPDFPage_InsertObject(page, black_path);
 
   // Render and check the result. Text is slightly different on Mac.
-  std::unique_ptr<void, FPDFBitmapDeleter> bitmap = RenderLoadedPage(page);
+  ScopedFPDFBitmap bitmap = RenderLoadedPage(page);
 #if _FX_PLATFORM_ == _FX_PLATFORM_APPLE_
   const char md5[] = "f9e6fa74230f234286bfcada9f7606d8";
 #else
@@ -715,7 +704,7 @@ TEST_F(FPDFEditEmbeddertest, EditOverExistingContent) {
   EXPECT_TRUE(FPDFPath_SetDrawMode(red_rect, FPDF_FILLMODE_ALTERNATE, 0));
   FPDFPage_InsertObject(page, red_rect);
 
-  std::unique_ptr<void, FPDFBitmapDeleter> bitmap = RenderLoadedPage(page);
+  ScopedFPDFBitmap bitmap = RenderLoadedPage(page);
   CompareBitmap(bitmap.get(), 612, 792, "ad04e5bd0f471a9a564fb034bd0fb073");
   EXPECT_TRUE(FPDFPage_GenerateContent(page));
 
@@ -742,8 +731,7 @@ TEST_F(FPDFEditEmbeddertest, EditOverExistingContent) {
   FPDFPage_InsertObject(saved_page, green_rect2);
   const char kLastMD5[] = "4b5b00f824620f8c9b8801ebb98e1cdd";
   {
-    std::unique_ptr<void, FPDFBitmapDeleter> new_bitmap =
-        RenderSavedPage(saved_page);
+    ScopedFPDFBitmap new_bitmap = RenderSavedPage(saved_page);
     CompareBitmap(new_bitmap.get(), 612, 792, kLastMD5);
   }
   EXPECT_TRUE(FPDFPage_GenerateContent(saved_page));
@@ -770,8 +758,7 @@ TEST_F(FPDFEditEmbeddertest, AddStrokedPaths) {
   EXPECT_TRUE(FPDFPath_SetDrawMode(rect, 0, 1));
   FPDFPage_InsertObject(page, rect);
   {
-    std::unique_ptr<void, FPDFBitmapDeleter> page_bitmap =
-        RenderPageWithFlags(page, nullptr, 0);
+    ScopedFPDFBitmap page_bitmap = RenderPageWithFlags(page, nullptr, 0);
     CompareBitmap(page_bitmap.get(), 612, 792,
                   "64bd31f862a89e0a9e505a5af6efd506");
   }
@@ -787,8 +774,7 @@ TEST_F(FPDFEditEmbeddertest, AddStrokedPaths) {
   EXPECT_TRUE(FPDFPath_SetDrawMode(check, 0, 1));
   FPDFPage_InsertObject(page, check);
   {
-    std::unique_ptr<void, FPDFBitmapDeleter> page_bitmap =
-        RenderPageWithFlags(page, nullptr, 0);
+    ScopedFPDFBitmap page_bitmap = RenderPageWithFlags(page, nullptr, 0);
     CompareBitmap(page_bitmap.get(), 612, 792,
                   "4b6f3b9d25c4e194821217d5016c3724");
   }
@@ -805,8 +791,7 @@ TEST_F(FPDFEditEmbeddertest, AddStrokedPaths) {
   EXPECT_TRUE(FPDFPath_SetDrawMode(path, FPDF_FILLMODE_ALTERNATE, 1));
   FPDFPage_InsertObject(page, path);
   {
-    std::unique_ptr<void, FPDFBitmapDeleter> page_bitmap =
-        RenderPageWithFlags(page, nullptr, 0);
+    ScopedFPDFBitmap page_bitmap = RenderPageWithFlags(page, nullptr, 0);
     CompareBitmap(page_bitmap.get(), 612, 792,
                   "ff3e6a22326754944cc6e56609acd73b");
   }
@@ -827,8 +812,7 @@ TEST_F(FPDFEditEmbeddertest, AddStandardFontText) {
   FPDFPageObj_Transform(text_object1, 1, 0, 0, 1, 20, 20);
   FPDFPage_InsertObject(page, text_object1);
   {
-    std::unique_ptr<void, FPDFBitmapDeleter> page_bitmap =
-        RenderPageWithFlags(page, nullptr, 0);
+    ScopedFPDFBitmap page_bitmap = RenderPageWithFlags(page, nullptr, 0);
 #if _FX_PLATFORM_ == _FX_PLATFORM_APPLE_
     const char md5[] = "a4dddc1a3930fa694bbff9789dab4161";
 #else
@@ -847,8 +831,7 @@ TEST_F(FPDFEditEmbeddertest, AddStandardFontText) {
   FPDFPageObj_Transform(text_object2, 1, 0, 0, 1, 100, 600);
   FPDFPage_InsertObject(page, text_object2);
   {
-    std::unique_ptr<void, FPDFBitmapDeleter> page_bitmap =
-        RenderPageWithFlags(page, nullptr, 0);
+    ScopedFPDFBitmap page_bitmap = RenderPageWithFlags(page, nullptr, 0);
 #if _FX_PLATFORM_ == _FX_PLATFORM_APPLE_
     const char md5_2[] = "a5c4ace4c6f27644094813fe1441a21c";
 #elif _FX_PLATFORM_ == _FX_PLATFORM_WINDOWS_
@@ -869,8 +852,7 @@ TEST_F(FPDFEditEmbeddertest, AddStandardFontText) {
   FPDFPageObj_Transform(text_object3, 1, 1.5, 2, 0.5, 200, 200);
   FPDFPage_InsertObject(page, text_object3);
   {
-    std::unique_ptr<void, FPDFBitmapDeleter> page_bitmap =
-        RenderPageWithFlags(page, nullptr, 0);
+    ScopedFPDFBitmap page_bitmap = RenderPageWithFlags(page, nullptr, 0);
 #if _FX_PLATFORM_ == _FX_PLATFORM_APPLE_
     const char md5_3[] = "40b3ef04f915ff4c4208948001763544";
 #elif _FX_PLATFORM_ == _FX_PLATFORM_WINDOWS_
@@ -888,8 +870,7 @@ TEST_F(FPDFEditEmbeddertest, AddStandardFontText) {
 
 TEST_F(FPDFEditEmbeddertest, GraphicsData) {
   // New page
-  std::unique_ptr<void, FPDFPageDeleter> page(
-      FPDFPage_New(CreateNewDocument(), 0, 612, 792));
+  ScopedFPDFPage page(FPDFPage_New(CreateNewDocument(), 0, 612, 792));
 
   // Create a rect with nontrivial graphics
   FPDF_PAGEOBJECT rect1 = FPDFPageObj_CreateNewRect(10, 10, 100, 100);
@@ -958,8 +939,7 @@ TEST_F(FPDFEditEmbeddertest, DoubleGenerating) {
 
   // Check the bitmap
   {
-    std::unique_ptr<void, FPDFBitmapDeleter> page_bitmap =
-        RenderPageWithFlags(page, nullptr, 0);
+    ScopedFPDFBitmap page_bitmap = RenderPageWithFlags(page, nullptr, 0);
     CompareBitmap(page_bitmap.get(), 612, 792,
                   "5384da3406d62360ffb5cac4476fff1c");
   }
@@ -971,8 +951,7 @@ TEST_F(FPDFEditEmbeddertest, DoubleGenerating) {
 
   // Check that bitmap displays changed content
   {
-    std::unique_ptr<void, FPDFBitmapDeleter> page_bitmap =
-        RenderPageWithFlags(page, nullptr, 0);
+    ScopedFPDFBitmap page_bitmap = RenderPageWithFlags(page, nullptr, 0);
     CompareBitmap(page_bitmap.get(), 612, 792,
                   "2e51656f5073b0bee611d9cd086aa09c");
   }
@@ -981,8 +960,7 @@ TEST_F(FPDFEditEmbeddertest, DoubleGenerating) {
   EXPECT_TRUE(FPDFPage_GenerateContent(page));
   EXPECT_EQ(3, static_cast<int>(graphics_dict->GetCount()));
   {
-    std::unique_ptr<void, FPDFBitmapDeleter> page_bitmap =
-        RenderPageWithFlags(page, nullptr, 0);
+    ScopedFPDFBitmap page_bitmap = RenderPageWithFlags(page, nullptr, 0);
     CompareBitmap(page_bitmap.get(), 612, 792,
                   "2e51656f5073b0bee611d9cd086aa09c");
   }
@@ -1014,7 +992,7 @@ TEST_F(FPDFEditEmbeddertest, LoadSimpleType1Font) {
       CPDF_Font::GetStockFont(cpdf_doc(), "Times-Bold");
   const uint8_t* data = stock_font->GetFont()->GetFontData();
   const uint32_t size = stock_font->GetFont()->GetSize();
-  std::unique_ptr<void, FPDFFontDeleter> font(
+  ScopedFPDFFont font(
       FPDFText_LoadFont(document(), data, size, FPDF_FONT_TYPE1, false));
   ASSERT_TRUE(font.get());
   CPDF_Font* typed_font = static_cast<CPDF_Font*>(font.get());
@@ -1043,7 +1021,7 @@ TEST_F(FPDFEditEmbeddertest, LoadSimpleTrueTypeFont) {
   const CPDF_Font* stock_font = CPDF_Font::GetStockFont(cpdf_doc(), "Courier");
   const uint8_t* data = stock_font->GetFont()->GetFontData();
   const uint32_t size = stock_font->GetFont()->GetSize();
-  std::unique_ptr<void, FPDFFontDeleter> font(
+  ScopedFPDFFont font(
       FPDFText_LoadFont(document(), data, size, FPDF_FONT_TRUETYPE, false));
   ASSERT_TRUE(font.get());
   CPDF_Font* typed_font = static_cast<CPDF_Font*>(font.get());
@@ -1073,7 +1051,7 @@ TEST_F(FPDFEditEmbeddertest, LoadCIDType0Font) {
       CPDF_Font::GetStockFont(cpdf_doc(), "Times-Roman");
   const uint8_t* data = stock_font->GetFont()->GetFontData();
   const uint32_t size = stock_font->GetFont()->GetSize();
-  std::unique_ptr<void, FPDFFontDeleter> font(
+  ScopedFPDFFont font(
       FPDFText_LoadFont(document(), data, size, FPDF_FONT_TYPE1, 1));
   ASSERT_TRUE(font.get());
   CPDF_Font* typed_font = static_cast<CPDF_Font*>(font.get());
@@ -1115,7 +1093,7 @@ TEST_F(FPDFEditEmbeddertest, LoadCIDType2Font) {
   const uint8_t* data = stock_font->GetFont()->GetFontData();
   const uint32_t size = stock_font->GetFont()->GetSize();
 
-  std::unique_ptr<void, FPDFFontDeleter> font(
+  ScopedFPDFFont font(
       FPDFText_LoadFont(document(), data, size, FPDF_FONT_TRUETYPE, 1));
   ASSERT_TRUE(font.get());
   CPDF_Font* typed_font = static_cast<CPDF_Font*>(font.get());
@@ -1167,7 +1145,7 @@ TEST_F(FPDFEditEmbeddertest, AddTrueTypeFontText) {
     const CPDF_Font* stock_font = CPDF_Font::GetStockFont(cpdf_doc(), "Arial");
     const uint8_t* data = stock_font->GetFont()->GetFontData();
     const uint32_t size = stock_font->GetFont()->GetSize();
-    std::unique_ptr<void, FPDFFontDeleter> font(
+    ScopedFPDFFont font(
         FPDFText_LoadFont(document(), data, size, FPDF_FONT_TRUETYPE, 0));
     ASSERT_TRUE(font.get());
 
@@ -1180,8 +1158,7 @@ TEST_F(FPDFEditEmbeddertest, AddTrueTypeFontText) {
     EXPECT_TRUE(FPDFText_SetText(text_object, text.get()));
     FPDFPageObj_Transform(text_object, 1, 0, 0, 1, 400, 400);
     FPDFPage_InsertObject(page, text_object);
-    std::unique_ptr<void, FPDFBitmapDeleter> page_bitmap =
-        RenderPageWithFlags(page, nullptr, 0);
+    ScopedFPDFBitmap page_bitmap = RenderPageWithFlags(page, nullptr, 0);
 #if _FX_PLATFORM_ == _FX_PLATFORM_APPLE_
     const char md5[] = "17d2b6cd574cf66170b09c8927529a94";
 #else
@@ -1198,8 +1175,7 @@ TEST_F(FPDFEditEmbeddertest, AddTrueTypeFontText) {
     FPDFPageObj_Transform(text_object2, 1, 0, 0, 1, 200, 200);
     FPDFPage_InsertObject(page, text_object2);
   }
-  std::unique_ptr<void, FPDFBitmapDeleter> page_bitmap2 =
-      RenderPageWithFlags(page, nullptr, 0);
+  ScopedFPDFBitmap page_bitmap2 = RenderPageWithFlags(page, nullptr, 0);
 #if _FX_PLATFORM_ == _FX_PLATFORM_APPLE_
   const char md5_2[] = "8eded4193ff1f0f77b8b600a825e97ea";
 #else
@@ -1222,7 +1198,7 @@ TEST_F(FPDFEditEmbeddertest, TransformAnnot) {
 
   {
     // Add an underline annotation to the page without specifying its rectangle.
-    std::unique_ptr<void, FPDFAnnotationDeleter> annot(
+    ScopedFPDFAnnotation annot(
         FPDFPage_CreateAnnot(page, FPDF_ANNOT_UNDERLINE));
     ASSERT_TRUE(annot);
 
@@ -1247,7 +1223,7 @@ TEST_F(FPDFEditEmbeddertest, AddCIDFontText) {
     const uint32_t size = CIDfont.GetSize();
 
     // Load the data into a FPDF_Font.
-    std::unique_ptr<void, FPDFFontDeleter> font(
+    ScopedFPDFFont font(
         FPDFText_LoadFont(document(), data, size, FPDF_FONT_TRUETYPE, 1));
     ASSERT_TRUE(font.get());
 
@@ -1279,8 +1255,7 @@ TEST_F(FPDFEditEmbeddertest, AddCIDFontText) {
   // Check that the text renders properly.
   const char md5[] = "c68cd79aa72bf83a7b25271370d46b21";
   {
-    std::unique_ptr<void, FPDFBitmapDeleter> page_bitmap =
-        RenderPageWithFlags(page, nullptr, 0);
+    ScopedFPDFBitmap page_bitmap = RenderPageWithFlags(page, nullptr, 0);
     CompareBitmap(page_bitmap.get(), 612, 792, md5);
   }
 
@@ -1312,8 +1287,7 @@ TEST_F(FPDFEditEmbeddertest, SaveAndRender) {
     EXPECT_TRUE(FPDFPath_BezierTo(green_path, 38, 33, 39, 36, 40, 40));
     EXPECT_TRUE(FPDFPath_Close(green_path));
     FPDFPage_InsertObject(page, green_path);
-    std::unique_ptr<void, FPDFBitmapDeleter> page_bitmap =
-        RenderLoadedPage(page);
+    ScopedFPDFBitmap page_bitmap = RenderLoadedPage(page);
     CompareBitmap(page_bitmap.get(), 612, 792, md5);
 
     // Now save the result, closing the page and document
@@ -1388,8 +1362,7 @@ TEST_F(FPDFEditEmbeddertest, ExtractJBigImageBitmap) {
   FPDF_PAGEOBJECT obj = FPDFPage_GetObject(page, 0);
   ASSERT_EQ(FPDF_PAGEOBJ_IMAGE, FPDFPageObj_GetType(obj));
   {
-    std::unique_ptr<void, FPDFBitmapDeleter> bitmap(
-        FPDFImageObj_GetBitmap(obj));
+    ScopedFPDFBitmap bitmap(FPDFImageObj_GetBitmap(obj));
     ASSERT_TRUE(bitmap);
     EXPECT_EQ(FPDFBitmap_Gray, FPDFBitmap_GetFormat(bitmap.get()));
     CompareBitmap(bitmap.get(), 1152, 720, "3f6a48e2b3e91b799bf34567f55cb4de");
diff --git a/fpdfsdk/fpdf_formfill_embeddertest.cpp b/fpdfsdk/fpdf_formfill_embeddertest.cpp
index cedb96c0ca..94c16f3290 100644
--- a/fpdfsdk/fpdf_formfill_embeddertest.cpp
+++ b/fpdfsdk/fpdf_formfill_embeddertest.cpp
@@ -9,7 +9,7 @@
 #include "core/fxcrt/fx_coordinates.h"
 #include "core/fxcrt/fx_string.h"
 #include "core/fxcrt/fx_system.h"
-#include "public/cpp/fpdf_deleters.h"
+#include "public/cpp/fpdf_scopers.h"
 #include "public/fpdf_formfill.h"
 #include "public/fpdf_fwlevent.h"
 #include "testing/embedder_test.h"
@@ -586,7 +586,7 @@ TEST_F(FPDFFormFillEmbeddertest, FormText) {
     EXPECT_TRUE(OpenDocument("text_form.pdf"));
     FPDF_PAGE page = LoadPage(0);
     ASSERT_TRUE(page);
-    std::unique_ptr<void, FPDFBitmapDeleter> bitmap1 = RenderLoadedPage(page);
+    ScopedFPDFBitmap bitmap1 = RenderLoadedPage(page);
     CompareBitmap(bitmap1.get(), 300, 300, md5_1);
 
     // Click on the textfield
@@ -600,14 +600,14 @@ TEST_F(FPDFFormFillEmbeddertest, FormText) {
     FORM_OnChar(form_handle(), page, 65, 0);
     FORM_OnChar(form_handle(), page, 66, 0);
     FORM_OnChar(form_handle(), page, 67, 0);
-    std::unique_ptr<void, FPDFBitmapDeleter> bitmap2 = RenderLoadedPage(page);
+    ScopedFPDFBitmap bitmap2 = RenderLoadedPage(page);
     CompareBitmap(bitmap2.get(), 300, 300, md5_2);
 
     // Take out focus by clicking out of the textfield
     FORM_OnMouseMove(form_handle(), page, 0, 15.0, 15.0);
     FORM_OnLButtonDown(form_handle(), page, 0, 15.0, 15.0);
     FORM_OnLButtonUp(form_handle(), page, 0, 15.0, 15.0);
-    std::unique_ptr<void, FPDFBitmapDeleter> bitmap3 = RenderLoadedPage(page);
+    ScopedFPDFBitmap bitmap3 = RenderLoadedPage(page);
     CompareBitmap(bitmap3.get(), 300, 300, md5_3);
 
     EXPECT_TRUE(FPDF_SaveAsCopy(document(), this, 0));
diff --git a/fpdfsdk/fpdf_ppo.cpp b/fpdfsdk/fpdf_ppo.cpp
index 6daaf13704..0847113f86 100644
--- a/fpdfsdk/fpdf_ppo.cpp
+++ b/fpdfsdk/fpdf_ppo.cpp
@@ -26,7 +26,7 @@
 #include "core/fxcrt/retain_ptr.h"
 #include "core/fxcrt/unowned_ptr.h"
 #include "fpdfsdk/cpdfsdk_helpers.h"
-#include "public/cpp/fpdf_deleters.h"
+#include "public/cpp/fpdf_scopers.h"
 #include "third_party/base/ptr_util.h"
 #include "third_party/base/stl_util.h"
 
@@ -778,8 +778,7 @@ FPDF_ImportNPagesToOne(FPDF_DOCUMENT src_doc,
     return nullptr;
   }
 
-  std::unique_ptr<void, FPDFDocumentDeleter> output_doc(
-      FPDF_CreateNewDocument());
+  ScopedFPDFDocument output_doc(FPDF_CreateNewDocument());
   if (!output_doc)
     return nullptr;
 
diff --git a/fpdfsdk/fpdf_ppo_embeddertest.cpp b/fpdfsdk/fpdf_ppo_embeddertest.cpp
index 614573b24f..8412771aaf 100644
--- a/fpdfsdk/fpdf_ppo_embeddertest.cpp
+++ b/fpdfsdk/fpdf_ppo_embeddertest.cpp
@@ -6,7 +6,7 @@
 #include <string>
 
 #include "fpdfsdk/cpdfsdk_helpers.h"
-#include "public/cpp/fpdf_deleters.h"
+#include "public/cpp/fpdf_scopers.h"
 #include "public/fpdf_edit.h"
 #include "public/fpdf_ppo.h"
 #include "public/fpdf_save.h"
@@ -64,19 +64,19 @@ TEST_F(FPDFPPOEmbeddertest, ImportPages) {
 TEST_F(FPDFPPOEmbeddertest, ImportNPages) {
   ASSERT_TRUE(OpenDocument("rectangles_multi_pages.pdf"));
 
-  std::unique_ptr<void, FPDFDocumentDeleter> output_doc_2up(
+  ScopedFPDFDocument output_doc_2up(
       FPDF_ImportNPagesToOne(document(), 612, 792, 2, 1));
   ASSERT_TRUE(output_doc_2up);
   EXPECT_EQ(3, FPDF_GetPageCount(output_doc_2up.get()));
-  std::unique_ptr<void, FPDFDocumentDeleter> output_doc_5up(
+  ScopedFPDFDocument output_doc_5up(
       FPDF_ImportNPagesToOne(document(), 612, 792, 5, 1));
   ASSERT_TRUE(output_doc_5up);
   EXPECT_EQ(1, FPDF_GetPageCount(output_doc_5up.get()));
-  std::unique_ptr<void, FPDFDocumentDeleter> output_doc_8up(
+  ScopedFPDFDocument output_doc_8up(
       FPDF_ImportNPagesToOne(document(), 792, 612, 8, 1));
   ASSERT_TRUE(output_doc_8up);
   EXPECT_EQ(1, FPDF_GetPageCount(output_doc_8up.get()));
-  std::unique_ptr<void, FPDFDocumentDeleter> output_doc_128up(
+  ScopedFPDFDocument output_doc_128up(
       FPDF_ImportNPagesToOne(document(), 792, 612, 128, 1));
   ASSERT_TRUE(output_doc_128up);
   EXPECT_EQ(1, FPDF_GetPageCount(output_doc_128up.get()));
@@ -106,16 +106,14 @@ TEST_F(FPDFPPOEmbeddertest, NupRenderImage) {
   const int kPageCount = 2;
   constexpr const char* kExpectedMD5s[kPageCount] = {
       "4d225b961da0f1bced7c83273e64c9b6", "fb18142190d770cfbc329d2b071aee4d"};
-  std::unique_ptr<void, FPDFDocumentDeleter> output_doc_3up(
+  ScopedFPDFDocument output_doc_3up(
       FPDF_ImportNPagesToOne(document(), 792, 612, 3, 1));
   ASSERT_TRUE(output_doc_3up);
   ASSERT_EQ(kPageCount, FPDF_GetPageCount(output_doc_3up.get()));
   for (int i = 0; i < kPageCount; ++i) {
-    std::unique_ptr<void, FPDFPageDeleter> page(
-        FPDF_LoadPage(output_doc_3up.get(), i));
+    ScopedFPDFPage page(FPDF_LoadPage(output_doc_3up.get(), i));
     ASSERT_TRUE(page);
-    std::unique_ptr<void, FPDFBitmapDeleter> bitmap(
-        RenderPageWithFlags(page.get(), nullptr, 0));
+    ScopedFPDFBitmap bitmap(RenderPageWithFlags(page.get(), nullptr, 0));
     EXPECT_EQ(792, FPDFBitmap_GetWidth(bitmap.get()));
     EXPECT_EQ(612, FPDFBitmap_GetHeight(bitmap.get()));
     EXPECT_EQ(kExpectedMD5s[i], HashBitmap(bitmap.get()));
@@ -218,7 +216,7 @@ TEST_F(FPDFPPOEmbeddertest, BUG_750568) {
     FPDF_PAGE page = LoadPage(i);
     ASSERT_TRUE(page);
 
-    std::unique_ptr<void, FPDFBitmapDeleter> bitmap = RenderLoadedPage(page);
+    ScopedFPDFBitmap bitmap = RenderLoadedPage(page);
     ASSERT_EQ(200, FPDFBitmap_GetWidth(bitmap.get()));
     ASSERT_EQ(200, FPDFBitmap_GetHeight(bitmap.get()));
     ASSERT_EQ(800, FPDFBitmap_GetStride(bitmap.get()));
@@ -235,8 +233,7 @@ TEST_F(FPDFPPOEmbeddertest, BUG_750568) {
     FPDF_PAGE page = FPDF_LoadPage(output_doc, i);
     ASSERT_TRUE(page);
 
-    std::unique_ptr<void, FPDFBitmapDeleter> bitmap =
-        RenderPageWithFlags(page, nullptr, 0);
+    ScopedFPDFBitmap bitmap = RenderPageWithFlags(page, nullptr, 0);
     ASSERT_EQ(200, FPDFBitmap_GetWidth(bitmap.get()));
     ASSERT_EQ(200, FPDFBitmap_GetHeight(bitmap.get()));
     ASSERT_EQ(800, FPDFBitmap_GetStride(bitmap.get()));
@@ -252,7 +249,7 @@ TEST_F(FPDFPPOEmbeddertest, ImportWithZeroLengthStream) {
   FPDF_PAGE page = LoadPage(0);
   ASSERT_TRUE(page);
 
-  std::unique_ptr<void, FPDFBitmapDeleter> bitmap = RenderLoadedPage(page);
+  ScopedFPDFBitmap bitmap = RenderLoadedPage(page);
   ASSERT_EQ(200, FPDFBitmap_GetWidth(bitmap.get()));
   ASSERT_EQ(200, FPDFBitmap_GetHeight(bitmap.get()));
   ASSERT_EQ(800, FPDFBitmap_GetStride(bitmap.get()));
@@ -267,8 +264,7 @@ TEST_F(FPDFPPOEmbeddertest, ImportWithZeroLengthStream) {
   EXPECT_EQ(1, FPDF_GetPageCount(new_doc));
   FPDF_PAGE new_page = FPDF_LoadPage(new_doc, 0);
   ASSERT_NE(nullptr, new_page);
-  std::unique_ptr<void, FPDFBitmapDeleter> new_bitmap =
-      RenderPageWithFlags(new_page, nullptr, 0);
+  ScopedFPDFBitmap new_bitmap = RenderPageWithFlags(new_page, nullptr, 0);
   ASSERT_EQ(200, FPDFBitmap_GetWidth(new_bitmap.get()));
   ASSERT_EQ(200, FPDFBitmap_GetHeight(new_bitmap.get()));
   ASSERT_EQ(800, FPDFBitmap_GetStride(new_bitmap.get()));
diff --git a/fpdfsdk/fpdf_save_embeddertest.cpp b/fpdfsdk/fpdf_save_embeddertest.cpp
index e753ba0356..64a305fa86 100644
--- a/fpdfsdk/fpdf_save_embeddertest.cpp
+++ b/fpdfsdk/fpdf_save_embeddertest.cpp
@@ -6,6 +6,7 @@
 #include <string>
 
 #include "core/fxcrt/fx_string.h"
+#include "public/cpp/fpdf_scopers.h"
 #include "public/fpdf_edit.h"
 #include "public/fpdf_ppo.h"
 #include "public/fpdf_save.h"
@@ -67,7 +68,7 @@ TEST_F(FPDFSaveEmbedderTest, SaveLinearizedDoc) {
   for (int i = 0; i < kPageCount; ++i) {
     FPDF_PAGE page = LoadPage(i);
     ASSERT_TRUE(page);
-    std::unique_ptr<void, FPDFBitmapDeleter> bitmap = RenderLoadedPage(page);
+    ScopedFPDFBitmap bitmap = RenderLoadedPage(page);
     EXPECT_EQ(612, FPDFBitmap_GetWidth(bitmap.get()));
     EXPECT_EQ(792, FPDFBitmap_GetHeight(bitmap.get()));
     original_md5[i] = HashBitmap(bitmap.get());
@@ -85,7 +86,7 @@ TEST_F(FPDFSaveEmbedderTest, SaveLinearizedDoc) {
   for (int i = 0; i < kPageCount; ++i) {
     FPDF_PAGE page = LoadSavedPage(i);
     ASSERT_TRUE(page);
-    std::unique_ptr<void, FPDFBitmapDeleter> bitmap = RenderSavedPage(page);
+    ScopedFPDFBitmap bitmap = RenderSavedPage(page);
     EXPECT_EQ(original_md5[i], HashBitmap(bitmap.get()));
     CloseSavedPage(page);
   }
diff --git a/fpdfsdk/fpdf_view_embeddertest.cpp b/fpdfsdk/fpdf_view_embeddertest.cpp
index 8d2cd3af1b..40e1c9df5d 100644
--- a/fpdfsdk/fpdf_view_embeddertest.cpp
+++ b/fpdfsdk/fpdf_view_embeddertest.cpp
@@ -8,6 +8,7 @@
 #include <string>
 
 #include "fpdfsdk/fpdf_view_c_api_test.h"
+#include "public/cpp/fpdf_scopers.h"
 #include "public/fpdfview.h"
 #include "testing/embedder_test.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ -439,7 +440,7 @@ TEST_F(FPDFViewEmbeddertest, FPDF_RenderPageBitmapWithMatrix) {
   EXPECT_EQ(200, page_width);
   EXPECT_EQ(300, page_height);
 
-  std::unique_ptr<void, FPDFBitmapDeleter> bitmap = RenderLoadedPage(page);
+  ScopedFPDFBitmap bitmap = RenderLoadedPage(page);
   CompareBitmap(bitmap.get(), page_width, page_height, kOriginalMD5);
 
   FS_RECTF page_rect{0, 0, page_width, page_height};