Remove duplication of encoded image data

third_party/WebKit/Source/core/fetch/Resource.h

Index: third_party/WebKit/Source/core/fetch/Resource.h
diff --git a/third_party/WebKit/Source/core/fetch/Resource.h b/third_party/WebKit/Source/core/fetch/Resource.h
index c524d3be6b5550d4f000f2465bdb1c3009004af7..53d9a7e5428f5969f18f6f8ddddff735fe6a3a69 100644
--- a/third_party/WebKit/Source/core/fetch/Resource.h
+++ b/third_party/WebKit/Source/core/fetch/Resource.h
@@ -26,6 +26,7 @@
 #include "core/CoreExport.h"
 #include "core/fetch/CachedMetadataHandler.h"
 #include "core/fetch/ResourceLoaderOptions.h"
+#include "platform/SharedBuffer.h"
 #include "platform/Timer.h"
 #include "platform/network/ResourceError.h"
 #include "platform/network/ResourceLoadPriority.h"
@@ -49,7 +50,6 @@ class ResourceClient;
 class ResourceTimingInfo;
 class ResourceLoader;
 class SecurityOrigin;
-class SharedBuffer;
 
 // A resource that is held in the cache. Classes who want to use this object should derive
 // from ResourceClient, to get the function calls in case the requested data has arrived.
@@ -172,7 +172,7 @@ public:
 
     bool isEligibleForIntegrityCheck(SecurityOrigin*) const;
 
-    SharedBuffer* resourceBuffer() const { return m_data.get(); }
+    virtual PassRefPtr<SharedBuffer> resourceBuffer() const { return m_data; }
     void setResourceBuffer(PassRefPtr<SharedBuffer>);
 
     virtual void willFollowRedirect(ResourceRequest&, const ResourceResponse&);