Replace OVERRIDE and FINAL with override and final in content/gpu/[a-s]*

content/gpu/gpu_child_thread.h

Index: content/gpu/gpu_child_thread.h
diff --git a/content/gpu/gpu_child_thread.h b/content/gpu/gpu_child_thread.h
index ff0c9258cd11fed094001d32487961a8d65e3ea4..b034a8f4460e6939a909f85ab95abf7c1a9c5668 100644
--- a/content/gpu/gpu_child_thread.h
+++ b/content/gpu/gpu_child_thread.h
@@ -47,14 +47,14 @@ class GpuChildThread : public ChildThread {
 
   virtual ~GpuChildThread();
 
-  virtual void Shutdown() OVERRIDE;
+  virtual void Shutdown() override;
 
   void Init(const base::Time& process_start_time);
   void StopWatchdog();
 
   // ChildThread overrides.
-  virtual bool Send(IPC::Message* msg) OVERRIDE;
-  virtual bool OnControlMessageReceived(const IPC::Message& msg) OVERRIDE;
+  virtual bool Send(IPC::Message* msg) override;
+  virtual bool OnControlMessageReceived(const IPC::Message& msg) override;
 
  private:
   // Message handlers.