Standardize usage of virtual/override/final in chrome/browser/media

chrome/browser/media/media_stream_capture_indicator.cc

 // 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.
 
 #include "chrome/browser/media/media_stream_capture_indicator.h"
 
 #include "base/bind.h"
 #include "base/i18n/rtl.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 138 matching lines @@
       const content::MediaStreamDevices& devices);
 
   // Increment ref-counts up based on the type of each device provided.
   void AddDevices(const content::MediaStreamDevices& devices);
 
   // Decrement ref-counts up based on the type of each device provided.
   void RemoveDevices(const content::MediaStreamDevices& devices);
 
  private:
   // content::WebContentsObserver overrides.
-  virtual void WebContentsDestroyed() override {
+  void WebContentsDestroyed() override {
     indicator_->UnregisterWebContents(web_contents());
     delete this;
   }
 
   scoped_refptr<MediaStreamCaptureIndicator> indicator_;
   int audio_ref_count_;
   int video_ref_count_;
   int mirroring_ref_count_;
 
   base::WeakPtrFactory<WebContentsDeviceUsage> weak_factory_;
@@ skipping 10 matching lines @@
     : public content::MediaStreamUI {
  public:
   UIDelegate(base::WeakPtr<WebContentsDeviceUsage> device_usage,
              const content::MediaStreamDevices& devices)
       : device_usage_(device_usage),
         devices_(devices),
         started_(false) {
     DCHECK(!devices_.empty());
   }
 
-  virtual ~UIDelegate() {
+  ~UIDelegate() override {
     if (started_ && device_usage_.get())
       device_usage_->RemoveDevices(devices_);
   }
 
  private:
   // content::MediaStreamUI interface.
-  virtual gfx::NativeViewId OnStarted(const base::Closure& close_callback)
-      override {
+  gfx::NativeViewId OnStarted(const base::Closure& close_callback) override {
     DCHECK(!started_);
     started_ = true;
     if (device_usage_.get())
       device_usage_->AddDevices(devices_);
     return 0;
   }
 
   base::WeakPtr<WebContentsDeviceUsage> device_usage_;
   content::MediaStreamDevices devices_;
   bool started_;
@@ skipping 268 matching lines @@
   } else if (audio && !video) {
     message_id = IDS_MEDIA_STREAM_STATUS_TRAY_TEXT_AUDIO_ONLY;
     *image = *mic_image_;
   } else if (!audio && video) {
     message_id = IDS_MEDIA_STREAM_STATUS_TRAY_TEXT_VIDEO_ONLY;
     *image = *camera_image_;
   }
 
   *tool_tip = l10n_util::GetStringUTF16(message_id);
 }