Refactor AcceleratedStaticBitmapImage

third_party/WebKit/Source/platform/graphics/gpu/DrawingBuffer.h

 /*
  * Copyright (c) 2010, Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 47 matching lines @@
 
 namespace WTF {
 class ArrayBufferContents;
 }
 
 namespace blink {
 class Extensions3DUtil;
 class StaticBitmapImage;
 class WebExternalTextureLayer;
 class WebGraphicsContext3DProvider;
+class WebGraphicsContext3DProviderWrapper;
 class WebLayer;
 
 // Manages a rendering target (framebuffer + attachment) for a canvas.  Can
 // publish its rendering results to a WebLayer for compositing.
 class PLATFORM_EXPORT DrawingBuffer
     : public NON_EXPORTED_BASE(cc::TextureLayerClient),
       public RefCounted<DrawingBuffer> {
   WTF_MAKE_NONCOPYABLE(DrawingBuffer);
 
  public:
@@ skipping 339 matching lines @@
 
   // The format to use when creating a multisampled renderbuffer.
   GLenum getMultisampledRenderbufferFormat();
 
   // Weak, reset by beginDestruction.
   Client* m_client = nullptr;
 
   const PreserveDrawingBuffer m_preserveDrawingBuffer;
   const WebGLVersion m_webGLVersion;
 
-  std::unique_ptr<WebGraphicsContext3DProvider> m_contextProvider;
+  std::unique_ptr<WebGraphicsContext3DProviderWrapper> m_contextProvider;

[Justin Novosad, 2016/11/08 20:41:50]

No need for unique_ptr
Just:
WebGraphicsContext3DProviderWrapper m_contextProvider;

[xidachen, 2016/11/08 21:01:54]

Done.

   // Lifetime is tied to the m_contextProvider.
   gpu::gles2::GLES2Interface* m_gl;
   std::unique_ptr<Extensions3DUtil> m_extensionsUtil;
   IntSize m_size = {-1, -1};
   const bool m_discardFramebufferSupported;
   const bool m_wantAlphaChannel;
   const bool m_premultipliedAlpha;
   const bool m_softwareRendering;
   bool m_hasImplicitStencilBuffer = false;
   bool m_storageTextureSupported = false;
@@ skipping 73 matching lines @@
   // RuntimeEnabledFeatures::webGLImageChromiumEnabled() call with
   // shouldUseChromiumImage() calls, and set m_chromiumImageUsage to
   // DisallowChromiumImage in the case of OffscreenCanvas.
   ChromiumImageUsage m_chromiumImageUsage;
   bool shouldUseChromiumImage();
 };
 
 }  // namespace blink
 
 #endif  // DrawingBuffer_h