| Index: Tools/DumpRenderTree/chromium/TestRunner/public/WebPreferences.h | 
| diff --git a/Tools/DumpRenderTree/chromium/TestRunner/public/WebPreferences.h b/Tools/DumpRenderTree/chromium/TestRunner/public/WebPreferences.h | 
| index 84316422278d4d1362f214a157701df62177061c..e24f0427d0ab6f396e923786bc124e43c38c76d4 100644 | 
| --- a/Tools/DumpRenderTree/chromium/TestRunner/public/WebPreferences.h | 
| +++ b/Tools/DumpRenderTree/chromium/TestRunner/public/WebPreferences.h | 
| @@ -89,6 +89,7 @@ struct WEBTESTRUNNER_EXPORT WebPreferences { | 
| bool acceleratedCompositingForFixedPositionEnabled; | 
| bool acceleratedCompositingForOverflowScrollEnabled; | 
| bool acceleratedCompositingForTransitionEnabled; | 
| +    bool acceleratedCompositingForFixedRootBackgroundEnabled; | 
| bool acceleratedCompositingEnabled; | 
| bool forceCompositingMode; | 
| bool threadedHTMLParser; | 
|  |