High CPU and increased memory usage fix for high-res (GIF, WEBP...) animations.

third_party/WebKit/Source/platform/graphics/DecodingImageGenerator.cpp

 /*
  * Copyright (C) 2012 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 17 matching lines @@
 #include "platform/PlatformInstrumentation.h"
 #include "platform/SharedBuffer.h"
 #include "platform/TraceEvent.h"
 #include "platform/graphics/ImageFrameGenerator.h"
 #include "platform/image-decoders/ImageDecoder.h"
 #include "platform/image-decoders/SegmentReader.h"
 #include "third_party/skia/include/core/SkData.h"
 
 namespace blink {
 
-DecodingImageGenerator::DecodingImageGenerator(PassRefPtr<ImageFrameGenerator> frameGenerator, const SkImageInfo& info, PassRefPtr<SegmentReader> data, bool allDataReceived, size_t index)
-    : SkImageGenerator(info)
+DecodingImageGenerator::DecodingImageGenerator(PassRefPtr<ImageFrameGenerator> frameGenerator, const SkImageInfo& info, PassRefPtr<SegmentReader> data, bool allDataReceived, size_t index, uint32_t uniqueID)
+    : SkImageGenerator(info, uniqueID)
     , m_frameGenerator(frameGenerator)
     , m_data(data)
     , m_allDataReceived(allDataReceived)
     , m_frameIndex(index)
     , m_canYUVDecode(false)
 {
 }
 
 DecodingImageGenerator::~DecodingImageGenerator()
 {
@@ skipping 75 matching lines @@
     const SkImageInfo info = SkImageInfo::MakeN32Premul(size.width(), size.height());
 
     RefPtr<ImageFrameGenerator> frame = ImageFrameGenerator::create(SkISize::Make(size.width(), size.height()), false);
     if (!frame)
         return 0;
 
     return new DecodingImageGenerator(frame, info, segmentReader.release(), true, 0);
 }
 
 } // namespace blink