Merge 52833 - Public GIF decoder should stop decoding when allocation fails...

WebCore/platform/image-decoders/gif/GIFImageDecoder.h

 /*
  * Copyright (C) 2006 Apple Computer, 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 48 matching lines @@
 
         virtual unsigned frameDurationAtIndex(size_t index) { return 0; }
 
         enum GIFQuery { GIFFullQuery, GIFSizeQuery, GIFFrameCountQuery };
 
         void decode(GIFQuery, unsigned haltAtFrame);
 
         // Callbacks from the GIF reader.
         bool sizeNowAvailable(unsigned width, unsigned height);
         void decodingHalted(unsigned bytesLeft);
-        void haveDecodedRow(unsigned frameIndex, unsigned char* rowBuffer, unsigned char* rowEnd, unsigned rowNumber, 
+        bool haveDecodedRow(unsigned frameIndex, unsigned char* rowBuffer, unsigned char* rowEnd, unsigned rowNumber, 
                             unsigned repeatCount, bool writeTransparentPixels);
         void frameComplete(unsigned frameIndex, unsigned frameDuration, RGBA32Buffer::FrameDisposalMethod disposalMethod);
         void gifComplete();
 
     private:
         // Called to initialize the frame buffer with the given index, based on the
         // previous frame's disposal method. Returns true on success. On failure,
         // this will mark the image as failed.
         bool initFrameBuffer(unsigned frameIndex);
 
         bool m_frameCountValid;
         bool m_currentBufferSawAlpha;
         mutable int m_repetitionCount;
         GIFImageDecoderPrivate* m_reader;
     };
 
 } // namespace WebCore
 
 #endif