Making GraphicsContext the owner of PlatformContext.

Source/core/platform/graphics/GraphicsContext.h

 /*
  * Copyright (C) 2003, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2008-2009 Torch Mobile, Inc.
  * Copyright (C) 2013 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 32 matching lines @@
 #include "third_party/skia/include/core/SkPath.h"
 #include "third_party/skia/include/core/SkRect.h"
 #include "third_party/skia/include/core/SkRRect.h"
 #include "third_party/skia/include/effects/SkCornerPathEffect.h"
 
 #include <wtf/Noncopyable.h>
 #include <wtf/PassOwnPtr.h>
 
 namespace WebCore {
 class PlatformContextSkia;
-typedef PlatformContextSkia GraphicsContextPlatformPrivate;
 }
 typedef WebCore::PlatformContextSkia PlatformGraphicsContext;
 
 namespace WebCore {
 
     const int cMisspellingLineThickness = 3;
     const int cMisspellingLinePatternWidth = 4;
     const int cMisspellingLinePatternGapWidth = 1;
 
     class AffineTransform;
@@ skipping 84 matching lines @@
         bool shouldAntialias : 1;
         bool shouldSmoothFonts : 1;
         bool shouldSubpixelQuantizeFonts : 1;
         bool paintingDisabled : 1;
         bool shadowsIgnoreTransforms : 1;
     };
 
     class GraphicsContext {
         WTF_MAKE_NONCOPYABLE(GraphicsContext); WTF_MAKE_FAST_ALLOCATED;
     public:
-        GraphicsContext(PlatformGraphicsContext*);
+        explicit GraphicsContext(SkCanvas*);
         ~GraphicsContext();
 
         PlatformGraphicsContext* platformContext() const;
 
         float strokeThickness() const;
         void setStrokeThickness(float);
         StrokeStyle strokeStyle() const;
         void setStrokeStyle(StrokeStyle);
         Color strokeColor() const;
         ColorSpace strokeColorSpace() const;
@@ skipping 212 matching lines @@
                 value = -value;
                 isNeg = true;
             }
             if (value >= max)
                 value %= max;
             if (isNeg)
                 value = -value;
             return value;
         }
 
-        GraphicsContextPlatformPrivate* m_data;
+        OwnPtr<PlatformContextSkia> m_data;
 
         GraphicsContextState m_state;
         Vector<GraphicsContextState> m_stack;
         bool m_updatingControlTints;
         unsigned m_transparencyCount;
     };
 
     class GraphicsContextStateSaver {
         WTF_MAKE_FAST_ALLOCATED;
     public:
@@ skipping 29 matching lines @@
 
     private:
         GraphicsContext& m_context;
         bool m_saveAndRestore;
     };
 
 } // namespace WebCore
 
 #endif // GraphicsContext_h