Take advantage of implicit std::unique_ptr<>(nulltpr_t) ctor.

Review-Url: https://codereview.chromium.org/2453163002

4 files changed, 6 insertions, 7 deletions

diff --git a/fpdfsdk/fpdf_progressive.cpp b/fpdfsdk/fpdf_progressive.cpp
index 1933c88485..13349cd762 100644
--- a/fpdfsdk/fpdf_progressive.cpp
+++ b/fpdfsdk/fpdf_progressive.cpp
@@ -91,5 +91,5 @@ DLLEXPORT void STDCALL FPDF_RenderPage_Close(FPDF_PAGE page) {
     return;
 
   pContext->m_pDevice->RestoreState(false);
-  pPage->SetRenderContext(std::unique_ptr<CPDF_PageRenderContext>());
+  pPage->SetRenderContext(nullptr);
 }
diff --git a/fpdfsdk/fpdfdoc_unittest.cpp b/fpdfsdk/fpdfdoc_unittest.cpp
index fc85404dba..48be72399c 100644
--- a/fpdfsdk/fpdfdoc_unittest.cpp
+++ b/fpdfsdk/fpdfdoc_unittest.cpp
@@ -25,7 +25,7 @@
 
 class CPDF_TestDocument : public CPDF_Document {
  public:
-  CPDF_TestDocument() : CPDF_Document(std::unique_ptr<CPDF_Parser>()) {}
+  CPDF_TestDocument() : CPDF_Document(nullptr) {}
 
   void SetRoot(CPDF_Dictionary* root) { m_pRootDict = root; }
   CPDF_IndirectObjectHolder* GetHolder() { return this; }
diff --git a/fpdfsdk/fpdfview.cpp b/fpdfsdk/fpdfview.cpp
index 92ca34effa..be56c531d2 100644
--- a/fpdfsdk/fpdfview.cpp
+++ b/fpdfsdk/fpdfview.cpp
@@ -575,7 +575,7 @@ DLLEXPORT void STDCALL FPDF_RenderPage(HDC dc,
     }
   }
 
-  pPage->SetRenderContext(std::unique_ptr<CPDF_PageRenderContext>());
+  pPage->SetRenderContext(nullptr);
 }
 #endif  // defined(_WIN32)
 
@@ -604,7 +604,7 @@ DLLEXPORT void STDCALL FPDF_RenderPageBitmap(FPDF_BITMAP bitmap,
   FPDF_RenderPage_Retail(pContext, page, start_x, start_y, size_x, size_y,
                          rotate, flags, TRUE, nullptr);
 
-  pPage->SetRenderContext(std::unique_ptr<CPDF_PageRenderContext>());
+  pPage->SetRenderContext(nullptr);
 }
 
 #ifdef _SKIA_SUPPORT_
@@ -622,7 +622,7 @@ DLLEXPORT FPDF_RECORDER STDCALL FPDF_RenderPageSkp(FPDF_PAGE page,
   pContext->m_pDevice.reset(skDevice);
   FPDF_RenderPage_Retail(pContext, page, 0, 0, size_x, size_y, 0, 0, TRUE,
                          nullptr);
-  pPage->SetRenderContext(std::unique_ptr<CPDF_PageRenderContext>());
+  pPage->SetRenderContext(nullptr);
   return recorder;
 }
 #endif
diff --git a/fpdfsdk/pdfwindow/PWL_FontMap.cpp b/fpdfsdk/pdfwindow/PWL_FontMap.cpp
index a6f79e283c..b2a1f2580d 100644
--- a/fpdfsdk/pdfwindow/PWL_FontMap.cpp
+++ b/fpdfsdk/pdfwindow/PWL_FontMap.cpp
@@ -48,8 +48,7 @@ CPWL_FontMap::~CPWL_FontMap() {
 CPDF_Document* CPWL_FontMap::GetDocument() {
   if (!m_pPDFDoc) {
     if (CPDF_ModuleMgr::Get()) {
-      m_pPDFDoc =
-          pdfium::MakeUnique<CPDF_Document>(std::unique_ptr<CPDF_Parser>());
+      m_pPDFDoc = pdfium::MakeUnique<CPDF_Document>(nullptr);
       m_pPDFDoc->CreateNewDoc();
     }
   }