Add animation support for WebP images

Source/bindings/v8/RuntimeEnabledFeatures.h

Index: Source/bindings/v8/RuntimeEnabledFeatures.h
diff --git a/Source/bindings/v8/RuntimeEnabledFeatures.h b/Source/bindings/v8/RuntimeEnabledFeatures.h
index 8fa100f2659a04328ad9ededcf786cf1d7c65495..49d24519ac1682b53ca3bd110f2575e4272c3bbb 100644
--- a/Source/bindings/v8/RuntimeEnabledFeatures.h
+++ b/Source/bindings/v8/RuntimeEnabledFeatures.h
@@ -246,6 +246,9 @@ public:
     static void setExperimentalWebSocketEnabled(bool isEnabled) { isExperimentalWebSocketEnabled = isEnabled; }
     static bool experimentalWebSocketEnabled() { return isExperimentalWebSocketEnabled; }
 
+    static void setAnimatedWebPEnabled(bool isEnabled) { isAnimatedWebPEnabled = isEnabled; }
+    static bool animatedWebPEnabled() { return isAnimatedWebPEnabled; }
+
 private:
     // Never instantiate.
     RuntimeEnabledFeatures() { }
@@ -330,6 +333,8 @@ private:
     static bool isDirectoryUploadEnabled;
 
     static bool isExperimentalWebSocketEnabled;
+
+    static bool isAnimatedWebPEnabled;
 };
 
 } // namespace WebCore