DO NOT COMMIT: Experimental removal of encoded image data

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

Index: third_party/WebKit/Source/platform/graphics/ImageSource.h
diff --git a/third_party/WebKit/Source/platform/graphics/ImageSource.h b/third_party/WebKit/Source/platform/graphics/ImageSource.h
index e09cbe1651111f3cbb859deca136e6661aae98b3..75ede41a315b5927067b6123b1e850943e6577d5 100644
--- a/third_party/WebKit/Source/platform/graphics/ImageSource.h
+++ b/third_party/WebKit/Source/platform/graphics/ImageSource.h
@@ -70,6 +70,7 @@ public:
     // Returns the number of bytes of frame data actually cleared.
     size_t clearCacheExceptFrame(size_t);
 
+    bool clear();
     PassRefPtr<SharedBuffer> data();
     // Returns false when the decoder layer rejects the data.
     bool setData(PassRefPtr<SharedBuffer> data, bool allDataReceived);
@@ -97,6 +98,8 @@ public:
     // frame has not yet begun to decode.
     size_t frameBytesAtIndex(size_t) const;
 
+    bool isBufferCleared() const { return m_decoder ? m_decoder->isBufferCleared() : false; }
+
 private:
     std::unique_ptr<DeferredImageDecoder> m_decoder;
 };