Standardize usage of virtual/override/final in content/browser/

content/browser/browser_plugin/browser_plugin_embedder.h

 // Copyright (c) 2012 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.
 
 // A BrowserPluginEmbedder handles messages coming from a BrowserPlugin's
 // embedder that are not directed at any particular existing guest process.
 // In the beginning, when a BrowserPlugin instance in the embedder renderer
 // process requests an initial navigation, the WebContents for that renderer
 // renderer creates a BrowserPluginEmbedder for itself. The
 // BrowserPluginEmbedder, in turn, forwards the requests to a
@@ skipping 21 matching lines @@
 namespace content {
 
 class BrowserPluginGuest;
 class BrowserPluginGuestManager;
 class RenderWidgetHostImpl;
 class WebContentsImpl;
 struct NativeWebKeyboardEvent;
 
 class CONTENT_EXPORT BrowserPluginEmbedder : public WebContentsObserver {
  public:
-  virtual ~BrowserPluginEmbedder();
+  ~BrowserPluginEmbedder() override;
 
   static BrowserPluginEmbedder* Create(WebContentsImpl* web_contents);
 
   // Returns this embedder's WebContentsImpl.
   WebContentsImpl* GetWebContents() const;
 
   // Called when embedder's |rwh| has sent screen rects to renderer.
   void DidSendScreenRects();
 
   // WebContentsObserver implementation.
-  virtual bool OnMessageReceived(const IPC::Message& message) override;
+  bool OnMessageReceived(const IPC::Message& message) override;
 
   void DragSourceEndedAt(int client_x, int client_y, int screen_x,
       int screen_y, blink::WebDragOperation operation);
 
   void OnUpdateDragCursor(bool* handled);
 
   void DragEnteredGuest(BrowserPluginGuest* guest);
 
   void DragLeftGuest(BrowserPluginGuest* guest);
 
@@ skipping 50 matching lines @@
   bool guest_drag_ending_;
 
   base::WeakPtrFactory<BrowserPluginEmbedder> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserPluginEmbedder);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_EMBEDDER_H_