Remove duplication of encoded image data

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

Index: third_party/WebKit/Source/platform/graphics/ImageSource.cpp
diff --git a/third_party/WebKit/Source/platform/graphics/ImageSource.cpp b/third_party/WebKit/Source/platform/graphics/ImageSource.cpp
index 8cd7c12e547787fce408157bb007957f9ffe9ded..b311d91c115b803144c5d2e8bb0942e933bd1d23 100644
--- a/third_party/WebKit/Source/platform/graphics/ImageSource.cpp
+++ b/third_party/WebKit/Source/platform/graphics/ImageSource.cpp
@@ -46,6 +46,16 @@ size_t ImageSource::clearCacheExceptFrame(size_t clearExceptFrame)
     return m_decoder ? m_decoder->clearCacheExceptFrame(clearExceptFrame) : 0;
 }
 
+bool ImageSource::hasData() const
+{
+    return m_decoder ? m_decoder->hasData() : false;
+}
+
+PassRefPtr<SharedBuffer> ImageSource::data()
+{
+    return m_decoder ? m_decoder->data() : nullptr;
+}
+
 void ImageSource::setData(SharedBuffer& data, bool allDataReceived)
 {
     // Create a decoder by sniffing the encoded data. If insufficient data bytes are available to