| Index: Source/WebKit/chromium/src/WebSettingsImpl.h | 
| diff --git a/Source/WebKit/chromium/src/WebSettingsImpl.h b/Source/WebKit/chromium/src/WebSettingsImpl.h | 
| index e5a82490620ff789c9816bf1d401a00e64ba9f46..334631095ab51ab417f7c68680b40d357e39f301 100644 | 
| --- a/Source/WebKit/chromium/src/WebSettingsImpl.h | 
| +++ b/Source/WebKit/chromium/src/WebSettingsImpl.h | 
| @@ -56,6 +56,7 @@ public: | 
| virtual void setAcceleratedCompositingForFixedPositionEnabled(bool); | 
| virtual void setAcceleratedCompositingForOverflowScrollEnabled(bool); | 
| virtual void setAcceleratedCompositingForTransitionEnabled(bool); | 
| +    virtual void setAcceleratedCompositingForFixedRootBackgroundEnabled(bool); | 
| virtual void setAcceleratedCompositingForPluginsEnabled(bool); | 
| virtual void setAcceleratedCompositingForScrollableFramesEnabled(bool); | 
| virtual void setAcceleratedCompositingForVideoEnabled(bool); | 
|  |