Update {virtual,override,final} to follow C++11 style.

content/renderer/java/gin_java_bridge_dispatcher.h

Index: content/renderer/java/gin_java_bridge_dispatcher.h
diff --git a/content/renderer/java/gin_java_bridge_dispatcher.h b/content/renderer/java/gin_java_bridge_dispatcher.h
index f9d5f5449adba01d7fba420bba38268f62e1fe15..591d153a787b8aa60dfb0bd9066eaa762cd59c91 100644
--- a/content/renderer/java/gin_java_bridge_dispatcher.h
+++ b/content/renderer/java/gin_java_bridge_dispatcher.h
@@ -41,11 +41,11 @@ class GinJavaBridgeDispatcher
   typedef ObjectMap::KeyType ObjectID;
 
   explicit GinJavaBridgeDispatcher(RenderFrame* render_frame);
-  virtual ~GinJavaBridgeDispatcher();
+  ~GinJavaBridgeDispatcher() override;
 
   // RenderFrameObserver override:
-  virtual bool OnMessageReceived(const IPC::Message& message) override;
-  virtual void DidClearWindowObject() override;
+  bool OnMessageReceived(const IPC::Message& message) override;
+  void DidClearWindowObject() override;
 
   void GetJavaMethods(ObjectID object_id, std::set<std::string>* methods);
   bool HasJavaMethod(ObjectID object_id, const std::string& method_name);