Standardize usage of virtual/override/final in mojo/

mojo/services/html_viewer/html_document_view.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MOJO_SERVICES_HTML_VIEWER_HTML_DOCUMENT_VIEW_H_
 #define MOJO_SERVICES_HTML_VIEWER_HTML_DOCUMENT_VIEW_H_
 
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "mojo/public/cpp/application/lazy_interface_ptr.h"
@@ skipping 68 matching lines @@
       const blink::WebConsoleMessage& message,
       const blink::WebString& source_name,
       unsigned source_line,
       const blink::WebString& stack_trace);
   virtual void didNavigateWithinPage(
       blink::WebLocalFrame* frame,
       const blink::WebHistoryItem& history_item,
       blink::WebHistoryCommitType commit_type);
 
   // ViewManagerDelegate methods:
-  virtual void OnEmbed(
-      ViewManager* view_manager,
-      View* root,
-      ServiceProviderImpl* embedee_service_provider_impl,
-      scoped_ptr<ServiceProvider> embedder_service_provider) override;
-  virtual void OnViewManagerDisconnected(ViewManager* view_manager) override;
+  void OnEmbed(ViewManager* view_manager,
+               View* root,
+               ServiceProviderImpl* embedee_service_provider_impl,
+               scoped_ptr<ServiceProvider> embedder_service_provider) override;
+  void OnViewManagerDisconnected(ViewManager* view_manager) override;
 
   // ViewObserver methods:
-  virtual void OnViewBoundsChanged(View* view,
-                                   const gfx::Rect& old_bounds,
-                                   const gfx::Rect& new_bounds) override;
-  virtual void OnViewDestroyed(View* view) override;
-  virtual void OnViewInputEvent(View* view, const EventPtr& event) override;
+  void OnViewBoundsChanged(View* view,
+                           const gfx::Rect& old_bounds,
+                           const gfx::Rect& new_bounds) override;
+  void OnViewDestroyed(View* view) override;
+  void OnViewInputEvent(View* view, const EventPtr& event) override;
 
   void Load(URLResponsePtr response);
 
   URLResponsePtr response_;
   scoped_ptr<ServiceProvider> embedder_service_provider_;
   Shell* shell_;
   LazyInterfacePtr<NavigatorHost> navigator_host_;
   blink::WebView* web_view_;
   View* root_;
   ViewManagerClientFactory view_manager_client_factory_;
   scoped_ptr<WebLayerTreeViewImpl> web_layer_tree_view_impl_;
   scoped_refptr<base::MessageLoopProxy> compositor_thread_;
   WebMediaPlayerFactory* web_media_player_factory_;
 
   base::WeakPtrFactory<HTMLDocumentView> weak_factory_;
   DISALLOW_COPY_AND_ASSIGN(HTMLDocumentView);
 };
 
 }  // namespace mojo
 
 #endif  // MOJO_SERVICES_HTML_VIEWER_HTML_DOCUMENT_VIEW_H_