cc: Remove the software compositing bool from PrepareTextureMailbox

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 191 matching lines @@
     bool defaultBufferRequiresAlphaChannelToBePreserved();
 
     WebLayer* platformLayer();
 
     gpu::gles2::GLES2Interface* contextGL();
     WebGraphicsContext3DProvider* contextProvider();
 
     // cc::TextureLayerClient implementation.
     bool PrepareTextureMailbox(
         cc::TextureMailbox* outMailbox,
-        std::unique_ptr<cc::SingleReleaseCallback>* outReleaseCallback,
-        bool useSharedMemory) override;
+        std::unique_ptr<cc::SingleReleaseCallback>* outReleaseCallback) override;
 
     // Returns a StaticBitmapImage backed by a texture containing the/ current contents of
     // the front buffer. This is done without any pixel copies. The texture in the ImageBitmap
     // is from the active ContextProvider on the DrawingBuffer.
     PassRefPtr<StaticBitmapImage> transferToStaticBitmapImage();
 
     // Destroys the TEXTURE_2D binding for the owned context
     bool copyToPlatformTexture(gpu::gles2::GLES2Interface*, GLuint texture, GLenum internalFormat,
         GLenum destType, GLint level, bool premultiplyAlpha, bool flipY, SourceDrawingBuffer);
 
@@ skipping 260 matching lines @@
     // used to resize the Canvas.
     SkBitmap m_resizingBitmap;
 
     // Used to flip a bitmap vertically.
     Vector<uint8_t> m_scanline;
 };
 
 } // namespace blink
 
 #endif // DrawingBuffer_h