Making GraphicsContext the owner of PlatformContext.

Source/WebKit/chromium/src/painting/GraphicsContextBuilder.h

 /*
  * Copyright (C) 2011 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 19 matching lines @@
 
 #ifndef GraphicsContextBuilder_h
 #define GraphicsContextBuilder_h
 
 #include "core/platform/graphics/GraphicsContext.h"
 
 #include "core/platform/graphics/skia/PlatformContextSkia.h"
 
 namespace WebKit {
 
 class GraphicsContextBuilder {

[jamesr, 2013/04/29 23:56:17]

this class can definitely go away (as can WebCanvas, for that matter). I think
this existed just to paper over the differences between Skia and CG backed
canvases and the slightly awkward PlatformContext setup routine

 public:
     GraphicsContextBuilder(WebCanvas* canvas)
-        : m_platformContext(canvas)
-        , m_graphicsContext(&m_platformContext)
+        : m_graphicsContext(canvas)
     {
     }
 
     WebCore::GraphicsContext& context() { return m_graphicsContext; }
 
 private:
-    WebCore::PlatformContextSkia m_platformContext;
     WebCore::GraphicsContext m_graphicsContext;
 };
 
 } // namespace WebKit
 
 #endif