Allowing YUV data to be retrieved from the JPEG Decoder.

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 64 matching lines @@
     ASSERT(info.fWidth == m_imageInfo.fWidth);
     ASSERT(info.fHeight == m_imageInfo.fHeight);
     ASSERT(info.fColorType == m_imageInfo.fColorType);
     ASSERT(info.fAlphaType == m_imageInfo.fAlphaType);
     PlatformInstrumentation::willDecodeLazyPixelRef(m_generationId);
     bool decoded = m_frameGenerator->decodeAndScale(m_imageInfo, m_frameIndex, pixels, rowBytes);
     PlatformInstrumentation::didDecodeLazyPixelRef();
     return decoded;
 }
 
+bool DecodingImageGenerator::onGetYUV8Planes(SkISize sizes[3], void* planes[3], size_t rowBytes[3])
+{
+    if (!planes || !planes[0]) {
+        return m_frameGenerator->getComponentSizes(sizes);
+    }
+
+    TRACE_EVENT0("blink", "DecodingImageGenerator::onGetYUV8Planes");
+    PlatformInstrumentation::willDecodeLazyPixelRef(m_generationId);
+    bool decoded = m_frameGenerator->decodeAndScale(planes, rowBytes);
+    PlatformInstrumentation::didDecodeLazyPixelRef();
+    return decoded;
+}
+
 } // namespace blink