| Index: chrome/common/pref_names.h | 
| diff --git a/chrome/common/pref_names.h b/chrome/common/pref_names.h | 
| index ed6bd09485b2b01589182d5cb9aeb23507bfb0f6..c9251d3fb0ed3d028bf15f3dafee6064c49cdb69 100644 | 
| --- a/chrome/common/pref_names.h | 
| +++ b/chrome/common/pref_names.h | 
| @@ -842,6 +842,7 @@ extern const char kLatestVersionWhenClickedUpdateMenuItem[]; | 
| extern const char kMediaRouterCloudServicesPrefSet[]; | 
| extern const char kMediaRouterEnableCloudServices[]; | 
| extern const char kMediaRouterFirstRunFlowAcknowledged[]; | 
| +extern const char kMediaRouterTabMirroringSources[]; | 
| #endif | 
|  | 
| extern const char kOriginTrialPublicKey[]; | 
|  |