| Index: Source/platform/RuntimeEnabledFeatures.in | 
| diff --git a/Source/platform/RuntimeEnabledFeatures.in b/Source/platform/RuntimeEnabledFeatures.in | 
| index d6fca4487bce5856f829e89a45f7d3d6513b0aa4..21a126e412395b51bb701e468f5a356246e544c1 100644 | 
| --- a/Source/platform/RuntimeEnabledFeatures.in | 
| +++ b/Source/platform/RuntimeEnabledFeatures.in | 
| @@ -21,7 +21,7 @@ BatteryStatus status=experimental | 
|  | 
| // This feature is deprecated and we are evangalizing affected sites. | 
| // See https://crbug.com/346236 for current status. | 
| -PrefixedVideoFullscreen status=stable | 
| +PrefixedVideoFullscreen status=test | 
|  | 
| // Enable bleeding-edge code to make Blink draw content faster. | 
| // The changes enabled behind this flag are very likely to break lots of content. | 
|  |