Merge 95506 - [chromium] ContentLayer's texture updater deleted during paint when compositing tur...

Source/WebCore/platform/graphics/chromium/LayerTextureUpdater.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:
  *
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 12 matching lines @@
  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 
 #ifndef LayerTextureUpdater_h
 #define LayerTextureUpdater_h
 
 #if USE(ACCELERATED_COMPOSITING)
 
 #include "GraphicsTypes3D.h"
-#include <wtf/Noncopyable.h>
+#include <wtf/RefCounted.h>
 
 namespace WebCore {
 
 class GraphicsContext3D;
 class IntRect;
 class IntSize;
 class ManagedTexture;
 
-class LayerTextureUpdater {
-    WTF_MAKE_NONCOPYABLE(LayerTextureUpdater);
+class LayerTextureUpdater : public RefCounted<LayerTextureUpdater> {
 public:
-    LayerTextureUpdater() { }
     virtual ~LayerTextureUpdater() { }
 
     enum Orientation {
         BottomUpOrientation,
         TopDownOrientation,
         InvalidOrientation,
     };
     enum SampledTexelFormat {
         SampledTexelFormatRGBA,
         SampledTexelFormatBGRA,
         SampledTexelFormatInvalid,
     };
     // Returns the orientation of the texture uploaded by this interface.
     virtual Orientation orientation() = 0;
     // Returns the format of the texel uploaded by this interface.
     // This format should not be confused by texture internal format.
     // This format specifies the component order in the sampled texel.
     // If the format is TexelFormatBGRA, vec4.x is blue and vec4.z is red.
     virtual SampledTexelFormat sampledTexelFormat(GC3Denum textureFormat) = 0;
     virtual void prepareToUpdate(const IntRect& contentRect, const IntSize& tileSize, int borderTexels) = 0;
     virtual void updateTextureRect(GraphicsContext3D*, ManagedTexture*, const IntRect& sourceRect, const IntRect& destRect) = 0;
 };
 
 } // namespace WebCore
 #endif // USE(ACCELERATED_COMPOSITING)
 #endif // LayerTextureUpdater_h