Basic APIs and tests for extracting and setting annotation paths

1. Added APIs for retrieving existing annotation paths and setting
annotation paths.
    * Added an embedder test testing all the new functions.

Bug=pdfium:737

Change-Id: Ic451bcd3be488261baf2182549c4238b887b219e
Reviewed-on: https://pdfium-review.googlesource.com/6676
Commit-Queue: Jane Liu <janeliulwq@google.com>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Reviewed-by: dsinclair <dsinclair@chromium.org>

1 files changed, 5 insertions, 3 deletions

diff --git a/testing/embedder_test.cpp b/testing/embedder_test.cpp
index 7e34260e60..55e93a3d32 100644
--- a/testing/embedder_test.cpp
+++ b/testing/embedder_test.cpp
@@ -255,10 +255,12 @@ FPDF_PAGE EmbedderTest::LoadPage(int page_number) {
 }
 
 FPDF_BITMAP EmbedderTest::RenderPage(FPDF_PAGE page) {
-  return RenderPageWithFlags(page, 0);
+  return RenderPageWithFlags(page, form_handle_, 0);
 }
 
-FPDF_BITMAP EmbedderTest::RenderPageWithFlags(FPDF_PAGE page, int flags) {
+FPDF_BITMAP EmbedderTest::RenderPageWithFlags(FPDF_PAGE page,
+                                              FPDF_FORMHANDLE handle,
+                                              int flags) {
   int width = static_cast<int>(FPDF_GetPageWidth(page));
   int height = static_cast<int>(FPDF_GetPageHeight(page));
   int alpha = FPDFPage_HasTransparency(page) ? 1 : 0;
@@ -266,7 +268,7 @@ FPDF_BITMAP EmbedderTest::RenderPageWithFlags(FPDF_PAGE page, int flags) {
   FPDF_DWORD fill_color = alpha ? 0x00000000 : 0xFFFFFFFF;
   FPDFBitmap_FillRect(bitmap, 0, 0, width, height, fill_color);
   FPDF_RenderPageBitmap(bitmap, page, 0, 0, width, height, 0, flags);
-  FPDF_FFLDraw(form_handle_, bitmap, page, 0, 0, width, height, 0, flags);
+  FPDF_FFLDraw(handle, bitmap, page, 0, 0, width, height, 0, flags);
   return bitmap;
 }