replace 'virtual ... OVERRIDE' with '... override'

base/message_loop/message_loop_proxy_impl.h

Index: base/message_loop/message_loop_proxy_impl.h
diff --git a/base/message_loop/message_loop_proxy_impl.h b/base/message_loop/message_loop_proxy_impl.h
index b7f62b9770d5059e0e0e22b31b9d301d24410812..b8ee1b3cd84232783efc54c97e16b874c76a8bbc 100644
--- a/base/message_loop/message_loop_proxy_impl.h
+++ b/base/message_loop/message_loop_proxy_impl.h
@@ -25,14 +25,14 @@ class BASE_EXPORT MessageLoopProxyImpl : public MessageLoopProxy {
       scoped_refptr<IncomingTaskQueue> incoming_queue);
 
   // MessageLoopProxy implementation
-  virtual bool PostDelayedTask(const tracked_objects::Location& from_here,
-                               const base::Closure& task,
-                               base::TimeDelta delay) OVERRIDE;
+  bool PostDelayedTask(const tracked_objects::Location& from_here,
+                       const base::Closure& task,
+                       base::TimeDelta delay) override;
   virtual bool PostNonNestableDelayedTask(
       const tracked_objects::Location& from_here,
       const base::Closure& task,
-      base::TimeDelta delay) OVERRIDE;
-  virtual bool RunsTasksOnCurrentThread() const OVERRIDE;
+      base::TimeDelta delay) override;
+  bool RunsTasksOnCurrentThread() const override;
 
  private:
   friend class RefCountedThreadSafe<MessageLoopProxyImpl>;