Add OVERRIDE to content/.

content/common/message_router.h

Index: content/common/message_router.h
diff --git a/content/common/message_router.h b/content/common/message_router.h
index cb97f3f34d51b8c1d95b09534a6b23e803d41086..d0d9c7548f9a3f17242289347b1a57ddd9ca2b6b 100644
--- a/content/common/message_router.h
+++ b/content/common/message_router.h
@@ -37,7 +37,7 @@ class MessageRouter : public IPC::Channel::Listener,
   virtual bool OnControlMessageReceived(const IPC::Message& msg);
 
   // IPC::Channel::Listener implementation:
-  virtual bool OnMessageReceived(const IPC::Message& msg);
+  virtual bool OnMessageReceived(const IPC::Message& msg) OVERRIDE;
 
   // Like OnMessageReceived, except it only handles routed messages.  Returns
   // true if the message was dispatched, or false if there was no listener for
@@ -45,7 +45,7 @@ class MessageRouter : public IPC::Channel::Listener,
   virtual bool RouteMessage(const IPC::Message& msg);
 
   // IPC::Message::Sender implementation:
-  virtual bool Send(IPC::Message* msg);
+  virtual bool Send(IPC::Message* msg) OVERRIDE;
 
   // Called to add/remove a listener for a particular message routing ID.
   void AddRoute(int32 routing_id, IPC::Channel::Listener* listener);