Simplify PDF initialization code.

chrome_pdf::InitializeSDK() always returns true. So remove code that
assume otherwise.

Change-Id: I2585e006e87b906795b0b1f201be78106871d9d4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1801249Reviewed-by: Robert Sesek <rsesek@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#696151}

pdf/pdf.cc

@@ -19,28 +19,16 @@ namespace {
 
 class ScopedSdkInitializer {
  public:
-  ScopedSdkInitializer() {}
+  explicit ScopedSdkInitializer(bool enable_v8) {
+    if (!IsSDKInitializedViaPepper())
+      InitializeSDK(enable_v8);
+  }
   ~ScopedSdkInitializer() {
-#if DCHECK_IS_ON()
-    DCHECK(initialized_);
-#endif
     if (!IsSDKInitializedViaPepper())
       ShutdownSDK();
   }
 
-  // Must be called.
-  bool Init(bool enable_v8) {
-#if DCHECK_IS_ON()
-    initialized_ = true;
-#endif
-    return IsSDKInitializedViaPepper() || InitializeSDK(enable_v8);
-  }
-
  private:
-#if DCHECK_IS_ON()
-  bool initialized_ = false;
-#endif
-
   DISALLOW_COPY_AND_ASSIGN(ScopedSdkInitializer);
 };
 
@@ -62,10 +50,7 @@ bool RenderPDFPageToDC(base::span<const uint8_t> pdf_buffer,
                        bool center_in_bounds,
                        bool autorotate,
                        bool use_color) {
-  ScopedSdkInitializer scoped_sdk_initializer;
-  if (!scoped_sdk_initializer.Init(/*enable_v8=*/true))
-    return false;
-
+  ScopedSdkInitializer scoped_sdk_initializer(/*enable_v8=*/true);
   PDFEngineExports* engine_exports = PDFEngineExports::Get();
   PDFEngineExports::RenderingSettings settings(
       dpi_x, dpi_y,
@@ -93,10 +78,7 @@ void SetPDFUsePrintMode(int mode) {
 bool GetPDFDocInfo(base::span<const uint8_t> pdf_buffer,
                    int* page_count,
                    double* max_page_width) {
-  ScopedSdkInitializer scoped_sdk_initializer;
-  if (!scoped_sdk_initializer.Init(/*enable_v8=*/true))
-    return false;
-
+  ScopedSdkInitializer scoped_sdk_initializer(/*enable_v8=*/true);
   PDFEngineExports* engine_exports = PDFEngineExports::Get();
   return engine_exports->GetPDFDocInfo(pdf_buffer, page_count, max_page_width);
 }
@@ -105,10 +87,7 @@ bool GetPDFPageSizeByIndex(base::span<const uint8_t> pdf_buffer,
                            int page_number,
                            double* width,
                            double* height) {
-  ScopedSdkInitializer scoped_sdk_initializer;
-  if (!scoped_sdk_initializer.Init(/*enable_v8=*/true))
-    return false;
-
+  ScopedSdkInitializer scoped_sdk_initializer(/*enable_v8=*/true);
   chrome_pdf::PDFEngineExports* engine_exports =
       chrome_pdf::PDFEngineExports::Get();
   return engine_exports->GetPDFPageSizeByIndex(pdf_buffer, page_number, width,
@@ -124,10 +103,7 @@ bool RenderPDFPageToBitmap(base::span<const uint8_t> pdf_buffer,
                            int dpi_y,
                            bool autorotate,
                            bool use_color) {
-  ScopedSdkInitializer scoped_sdk_initializer;
-  if (!scoped_sdk_initializer.Init(/*enable_v8=*/true))
-    return false;
-
+  ScopedSdkInitializer scoped_sdk_initializer(/*enable_v8=*/true);
   PDFEngineExports* engine_exports = PDFEngineExports::Get();
   PDFEngineExports::RenderingSettings settings(
       dpi_x, dpi_y, pp::Rect(bitmap_width, bitmap_height), true, false, true,
@@ -141,10 +117,7 @@ std::vector<uint8_t> ConvertPdfPagesToNupPdf(
     size_t pages_per_sheet,
     const gfx::Size& page_size,
     const gfx::Rect& printable_area) {
-  ScopedSdkInitializer scoped_sdk_initializer;
-  if (!scoped_sdk_initializer.Init(/*enable_v8=*/false))
-    return std::vector<uint8_t>();
-
+  ScopedSdkInitializer scoped_sdk_initializer(/*enable_v8=*/false);
   PDFEngineExports* engine_exports = PDFEngineExports::Get();
   return engine_exports->ConvertPdfPagesToNupPdf(
       std::move(input_buffers), pages_per_sheet, page_size, printable_area);
@@ -155,10 +128,7 @@ std::vector<uint8_t> ConvertPdfDocumentToNupPdf(
     size_t pages_per_sheet,
     const gfx::Size& page_size,
     const gfx::Rect& printable_area) {
-  ScopedSdkInitializer scoped_sdk_initializer;
-  if (!scoped_sdk_initializer.Init(/*enable_v8=*/false))
-    return std::vector<uint8_t>();
-
+  ScopedSdkInitializer scoped_sdk_initializer(/*enable_v8=*/false);
   PDFEngineExports* engine_exports = PDFEngineExports::Get();
   return engine_exports->ConvertPdfDocumentToNupPdf(
       input_buffer, pages_per_sheet, page_size, printable_area);

pdf/pdf_engine.h

@@ -58,7 +58,7 @@ namespace chrome_pdf {
 // Do one time initialization of the SDK.
 // If |enable_v8| is false, then the PDFEngine will not be able to run
 // JavaScript.
-bool InitializeSDK(bool enable_v8);
+void InitializeSDK(bool enable_v8);
 // Tells the SDK that we're shutting down.
 void ShutdownSDK();
 

pdf/pdf_ppapi.cc

@@ -52,8 +52,7 @@ pp::Instance* PDFModule::CreateInstance(PP_Instance instance) {
       v8::V8::SetNativesDataBlob(&natives);
       v8::V8::SetSnapshotDataBlob(&snapshot);
     }
-    if (!InitializeSDK(/*enable_v8=*/true))
-      return nullptr;
+    InitializeSDK(/*enable_v8=*/true);
     g_sdk_initialized_via_pepper = true;
   }
 

pdf/pdfium/pdfium_engine.cc

@@ -363,7 +363,7 @@ wchar_t SimplifyForSearch(wchar_t c) {
 
 }  // namespace
 
-bool InitializeSDK(bool enable_v8) {
+void InitializeSDK(bool enable_v8) {
   FPDF_LIBRARY_CONFIG config;
   config.version = 2;
   config.m_pUserFontPaths = nullptr;
@@ -382,8 +382,6 @@ bool InitializeSDK(bool enable_v8) {
 #endif
 
   InitializeUnsupportedFeaturesHandler();
-
-  return true;
 }
 
 void ShutdownSDK() {