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

content/browser/media/midi_dispatcher_host.h

 // Copyright 2013 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 CONTENT_BROWSER_MEDIA_MIDI_DISPATCHER_HOST_H_
 #define CONTENT_BROWSER_MEDIA_MIDI_DISPATCHER_HOST_H_
 
 #include <vector>
 
 #include "base/callback_forward.h"
 #include "base/memory/weak_ptr.h"
 #include "content/public/browser/web_contents_observer.h"
 
 namespace content {
 
 class BrowserContext;
 
 // MidiDispatcherHost handles permissions for using system exclusive messages.
 class MidiDispatcherHost : public WebContentsObserver {
  public:
   explicit MidiDispatcherHost(WebContents* web_contents);
-  virtual ~MidiDispatcherHost();
+  ~MidiDispatcherHost() override;
 
   // WebContentsObserver implementation.
-  virtual void RenderFrameDeleted(RenderFrameHost* render_frame_host) override;
-  virtual void DidNavigateAnyFrame(RenderFrameHost* render_frame_host,
-                                   const LoadCommittedDetails& details,
-                                   const FrameNavigateParams& params) override;
-  virtual bool OnMessageReceived(const IPC::Message& message,
-                                 RenderFrameHost* render_frame_host) override;
+  void RenderFrameDeleted(RenderFrameHost* render_frame_host) override;
+  void DidNavigateAnyFrame(RenderFrameHost* render_frame_host,
+                           const LoadCommittedDetails& details,
+                           const FrameNavigateParams& params) override;
+  bool OnMessageReceived(const IPC::Message& message,
+                         RenderFrameHost* render_frame_host) override;
 
  private:
   void OnRequestSysExPermission(RenderFrameHost* render_frame_host,
                                 int bridge_id,
                                 const GURL& origin,
                                 bool user_gesture);
   void OnCancelSysExPermissionRequest(RenderFrameHost* render_frame_host,
                                       int bridge_id,
                                       const GURL& requesting_frame);
   void WasSysExPermissionGranted(int render_process_id,
@@ skipping 15 matching lines @@
   std::vector<PendingPermission> pending_permissions_;
 
   base::WeakPtrFactory<MidiDispatcherHost> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(MidiDispatcherHost);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_MEDIA_MIDI_DISPATCHER_HOST_H_