| Index: Tools/DumpRenderTree/chromium/DumpRenderTree.cpp | 
| diff --git a/Tools/DumpRenderTree/chromium/DumpRenderTree.cpp b/Tools/DumpRenderTree/chromium/DumpRenderTree.cpp | 
| index 7b448fb60b109d6c5cf992be42b4badc0f091afb..39583b0893468b5d61f1f59d930fdc3c202ded03 100644 | 
| --- a/Tools/DumpRenderTree/chromium/DumpRenderTree.cpp | 
| +++ b/Tools/DumpRenderTree/chromium/DumpRenderTree.cpp | 
| @@ -63,6 +63,7 @@ static const char optionEnableAcceleratedCompositingForVideo[] = "--enable-accel | 
| static const char optionEnableAcceleratedFixedPosition[] = "--enable-accelerated-fixed-position"; | 
| static const char optionEnableAcceleratedOverflowScroll[] = "--enable-accelerated-overflow-scroll"; | 
| static const char optionEnableAcceleratedTransition[] = "--enable-accelerated-transition"; | 
| +static const char optionEnableAcceleratedFixedRootBackground[] = "--enable-accelerated-fixed-root-background"; | 
| static const char optionEnablePerTilePainting[] = "--enable-per-tile-painting"; | 
| static const char optionEnableDeferredImageDecoding[] = "--enable-deferred-image-decoding"; | 
| static const char optionDisableThreadedHTMLParser[] = "--disable-threaded-html-parser"; | 
| @@ -134,6 +135,7 @@ int main(int argc, char* argv[]) | 
| bool acceleratedCompositingForFixedPositionEnabled = false; | 
| bool acceleratedCompositingForOverflowScrollEnabled = false; | 
| bool acceleratedCompositingForTransitionEnabled = false; | 
| +    bool acceleratedCompositingForFixedRootBackgroundEnabled = false; | 
| bool softwareCompositingEnabled = false; | 
| bool threadedCompositingEnabled = false; | 
| bool forceCompositingMode = false; | 
| @@ -175,6 +177,8 @@ int main(int argc, char* argv[]) | 
| acceleratedCompositingForOverflowScrollEnabled = true; | 
| else if (argument == optionEnableAcceleratedTransition) | 
| acceleratedCompositingForTransitionEnabled = true; | 
| +        else if (argument == optionEnableAcceleratedFixedRootBackground) | 
| +            acceleratedCompositingForFixedRootBackgroundEnabled = true; | 
| else if (argument == optionEnableSoftwareCompositing) | 
| softwareCompositingEnabled = true; | 
| else if (argument == optionEnableThreadedCompositing) | 
| @@ -224,6 +228,7 @@ int main(int argc, char* argv[]) | 
| shell.setAcceleratedCompositingForFixedPositionEnabled(acceleratedCompositingForFixedPositionEnabled); | 
| shell.setAcceleratedCompositingForOverflowScrollEnabled(acceleratedCompositingForOverflowScrollEnabled); | 
| shell.setAcceleratedCompositingForTransitionEnabled(acceleratedCompositingForTransitionEnabled); | 
| +        shell.setAcceleratedCompositingForFixedRootBackgroundEnabled(acceleratedCompositingForFixedRootBackgroundEnabled); | 
| shell.setSoftwareCompositingEnabled(softwareCompositingEnabled); | 
| shell.setThreadedCompositingEnabled(threadedCompositingEnabled); | 
| shell.setForceCompositingMode(forceCompositingMode); | 
|  |