Animated WebP: Optimize decoding in case of seeking

Source/core/platform/graphics/chromium/DeferredImageDecoderTest.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 94 matching lines @@
     virtual size_t frameCount()
     {
         return m_frameCount;
     }
 
     virtual int repetitionCount() const
     {
         return m_repetitionCount;
     }
 
-    virtual ImageFrame::FrameStatus frameStatus()
+    virtual ImageFrame::Status frameStatus()
     {
         return m_frameStatus;
     }
 
     virtual float frameDuration() const
     {
         return m_frameDuration;
     }
 
 protected:
     // Don't own this but saves the pointer to query states.
     MockImageDecoder* m_actualDecoder;
     OwnPtr<DeferredImageDecoder> m_lazyDecoder;
     SkPicture m_picture;
     SkAutoTUnref<SkCanvas> m_canvas;
     int m_frameBufferRequestCount;
     RefPtr<SharedBuffer> m_data;
     size_t m_frameCount;
     int m_repetitionCount;
-    ImageFrame::FrameStatus m_frameStatus;
+    ImageFrame::Status m_frameStatus;

[Peter Kasting, 2013/08/23 01:14:02]

Nit: Name this m_status (same everywhere else in this patch)

[urvang (Google), 2013/08/23 02:34:31]

Done.

     float m_frameDuration;
 };
 
 TEST_F(DeferredImageDecoderTest, drawIntoSkPicture)
 {
     m_lazyDecoder->setData(m_data.get(), true);
     RefPtr<NativeImageSkia> image = m_lazyDecoder->frameBufferAtIndex(0)->asNewNativeImage();
     EXPECT_EQ(1, image->bitmap().width());
     EXPECT_EQ(1, image->bitmap().height());
     EXPECT_FALSE(image->bitmap().isNull());
@@ skipping 133 matching lines @@
     EXPECT_EQ(10.0f, m_lazyDecoder->frameDurationAtIndex(0));
     EXPECT_EQ(20.0f, m_lazyDecoder->frameDurationAtIndex(1));
     EXPECT_EQ(30.0f, m_lazyDecoder->frameDurationAtIndex(2));
     EXPECT_EQ(10.0f, m_lazyDecoder->frameBufferAtIndex(0)->duration());
     EXPECT_EQ(20.0f, m_lazyDecoder->frameBufferAtIndex(1)->duration());
     EXPECT_EQ(30.0f, m_lazyDecoder->frameBufferAtIndex(2)->duration());
     EXPECT_EQ(10, m_lazyDecoder->repetitionCount());
 }
 
 } // namespace