replace OVERRIDE and FINAL with override and final in extensions/

extensions/browser/script_executor.cc

Index: extensions/browser/script_executor.cc
diff --git a/extensions/browser/script_executor.cc b/extensions/browser/script_executor.cc
index a2ce27b121a15a8eea0e2910cff1c7ca97a81ae4..4df07981717bdf11802461211a7191da4a0fff86 100644
--- a/extensions/browser/script_executor.cc
+++ b/extensions/browser/script_executor.cc
@@ -47,7 +47,7 @@ class Handler : public content::WebContentsObserver {
 
   virtual ~Handler() {}
 
-  virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE {
+  virtual bool OnMessageReceived(const IPC::Message& message) override {
     // Unpack by hand to check the request_id, since there may be multiple
     // requests in flight but only one is for this.
     if (message.type() != ExtensionHostMsg_ExecuteCodeFinished::ID)
@@ -67,7 +67,7 @@ class Handler : public content::WebContentsObserver {
     return true;
   }
 
-  virtual void WebContentsDestroyed() OVERRIDE {
+  virtual void WebContentsDestroyed() override {
     base::ListValue val;
     callback_.Run(kRendererDestroyed, GURL(std::string()), val);
     delete this;