Don't cache any SkBitmaps in DeferredImageDecoder

Source/platform/graphics/BitmapImage.h

 /*
  * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2004, 2005, 2006 Apple Computer, Inc.  All rights reserved.
  * Copyright (C) 2008-2009 Torch Mobile, Inc.
  *
  * 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 17 matching lines @@
 #ifndef BitmapImage_h
 #define BitmapImage_h
 
 #include "platform/geometry/IntSize.h"
 #include "platform/graphics/Color.h"
 #include "platform/graphics/FrameData.h"
 #include "platform/graphics/Image.h"
 #include "platform/graphics/ImageAnimationPolicy.h"
 #include "platform/graphics/ImageOrientation.h"
 #include "platform/graphics/ImageSource.h"
+#include "platform/image-decoders/ImageDecoder.h"

[Stephen White, 2015/03/13 19:33:31]

I assume this is for the repetition count enum?

Rather than add this (possibly large) dependency, could we pull the enum out
into its own file?

 #include "wtf/Forward.h"
 
 namespace blink {
 
 class NativeImageSkia;
 template <typename T> class Timer;
 
 class PLATFORM_EXPORT BitmapImage : public Image {
     friend class GeneratedImage;
     friend class CrossfadeGeneratedImage;
@@ skipping 17 matching lines @@
     virtual bool currentFrameHasSingleSecurityOrigin() const override;
 
     virtual IntSize size() const override;
     IntSize sizeRespectingOrientation() const;
     virtual bool getHotSpot(IntPoint&) const override;
     virtual String filenameExtension() const override;
     virtual bool dataChanged(bool allDataReceived) override;
 
     bool isAllDataReceived() const { return m_allDataReceived; }
     bool hasColorProfile() const;
-    void resetDecoder();
 
     // It may look unusual that there's no start animation call as public API.
     // This because we start and stop animating lazily. Animation starts when
     // the image is rendered, and automatically pauses once all observers no
     // longer want to render the image.
     virtual void stopAnimation() override;
     virtual void resetAnimation() override;
     virtual bool maybeAnimated() override;
 
     virtual void setAnimationPolicy(ImageAnimationPolicy policy) override { m_animationPolicy = policy; }
@@ skipping 111 matching lines @@
     bool m_sizeAvailable : 1; // Whether or not we can obtain the size of the first image frame yet from ImageIO.
     mutable bool m_hasUniformFrameSize : 1;
     mutable bool m_haveFrameCount : 1;
 };
 
 DEFINE_IMAGE_TYPE_CASTS(BitmapImage);
 
 } // namespace blink
 
 #endif