Remove duplication of encoded image data

third_party/WebKit/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 47 matching lines @@
     ~BitmapImage() override;
 
     bool isBitmapImage() const override { return true; }
 
     bool currentFrameHasSingleSecurityOrigin() const override;
 
     IntSize size() const override;
     IntSize sizeRespectingOrientation() const;
     bool getHotSpot(IntPoint&) const override;
     String filenameExtension() const override;
+    bool setData(PassRefPtr<SharedBuffer> data, bool allDataReceived) override;
     bool dataChanged(bool allDataReceived) override;
 
     bool isAllDataReceived() const { return m_allDataReceived; }
     bool hasColorProfile() const;
 
     void resetAnimation() override;
     bool maybeAnimated() override;
 
     void setAnimationPolicy(ImageAnimationPolicy policy) override { m_animationPolicy = policy; }
     ImageAnimationPolicy animationPolicy() override { return m_animationPolicy; }
@@ skipping 40 matching lines @@
 
     // Returns the total number of bytes allocated for all framebuffers, i.e.
     // the sum of m_source.frameBytesAtIndex(...) for all frames.
     size_t totalFrameBytes();
 
     // Called to wipe out the entire frame buffer cache and tell the image
     // source to destroy everything; this is used when e.g. we want to free
     // some room in the image cache.
     void destroyDecodedData() override;
 
+    PassRefPtr<SharedBuffer> data() override;
+
     // Notifies observers that the memory footprint has changed.
     void notifyMemoryChanged();
 
     // Whether or not size is available yet.
     bool isSizeAvailable();
 
     // Animation.
     // We start and stop animating lazily.  Animation starts when the image is
     // rendered, and automatically stops once no observer wants to render the
     // image.
     int repetitionCount(bool imageKnownToBeComplete);  // |imageKnownToBeComplete| should be set if the caller knows the entire image has been decoded.
     bool shouldAnimate();
     void startAnimation(CatchUpAnimation = CatchUp) override;
     void stopAnimation();
     void advanceAnimation(Timer<BitmapImage>*);
     // Advance the animation and let the next frame get scheduled without
     // catch-up logic. For large images with slow or heavily-loaded systems,
     // throwing away data as we go (see destroyDecodedData()) means we can spend
     // so much time re-decoding data that we are always behind. To prevent this,
     // we force the next animation to skip the catch up logic.
     void advanceAnimationWithoutCatchUp(Timer<BitmapImage>*);
 
     // Function that does the real work of advancing the animation.  When
     // skippingFrames is true, we're in the middle of a loop trying to skip over
     // a bunch of animation frames, so we should not do things like decode each
     // one or notify our observers.
     // Returns whether the animation was advanced.
     bool internalAdvanceAnimation(bool skippingFrames);
 
+    RefPtr<SharedBuffer> m_temporaryEncodedImageData;
     ImageSource m_source;
     mutable IntSize m_size; // The size to use for the overall image (will just be the size of the first image).
     mutable IntSize m_sizeRespectingOrientation;
 
     size_t m_currentFrame; // The index of the current frame of animation.
     Vector<FrameData, 1> m_frames; // An array of the cached frames of the animation. We have to ref frames to pin them in the cache.
 
     RefPtr<SkImage> m_cachedFrame; // A cached copy of the most recently-accessed frame.
     size_t m_cachedFrameIndex; // Index of the frame that is cached.
 
@@ skipping 13 matching lines @@
     mutable bool m_haveSize : 1; // Whether or not our |m_size| member variable has the final overall image size yet.
     bool m_sizeAvailable : 1; // Whether or not we can obtain the size of the first image frame yet from ImageIO.
     mutable bool m_haveFrameCount : 1;
 };
 
 DEFINE_IMAGE_TYPE_CASTS(BitmapImage);
 
 } // namespace blink
 
 #endif