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

chrome/browser/extensions/api/tab_capture/tab_capture_registry.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/extensions/api/tab_capture/tab_capture_registry.h"
 
 #include "base/lazy_instance.h"
 #include "base/values.h"
 #include "chrome/browser/sessions/session_tab_helper.h"
 #include "components/keyed_service/content/browser_context_dependency_manager.h"
@@ skipping 27 matching lines @@
         is_verified_(false),
         // TODO(miu): This initial value for |is_fullscreened_| is a faulty
         // assumption.  http://crbug.com/350491
         is_fullscreened_(false),
         render_process_id_(-1),
         render_frame_id_(-1) {
     DCHECK(web_contents());
     DCHECK(registry_);
   }
 
-  virtual ~LiveRequest() {}
+  ~LiveRequest() override {}
 
   // Accessors.
   const std::string& extension_id() const {
     return extension_id_;
   }
   TabCaptureState capture_state() const {
     return capture_state_;
   }
   bool is_verified() const {
     return is_verified_;
@@ skipping 30 matching lines @@
     registry_->DispatchStatusChangeEvent(this);
   }
 
   void GetCaptureInfo(tab_capture::CaptureInfo* info) const {
     info->tab_id = SessionTabHelper::IdForTab(web_contents());
     info->status = capture_state_;
     info->fullscreen = is_fullscreened_;
   }
 
  protected:
-  virtual void DidShowFullscreenWidget(int routing_id) override {
+  void DidShowFullscreenWidget(int routing_id) override {
     is_fullscreened_ = true;
     if (capture_state_ == tab_capture::TAB_CAPTURE_STATE_ACTIVE)
       registry_->DispatchStatusChangeEvent(this);
   }
 
-  virtual void DidDestroyFullscreenWidget(int routing_id) override {
+  void DidDestroyFullscreenWidget(int routing_id) override {
     is_fullscreened_ = false;
     if (capture_state_ == tab_capture::TAB_CAPTURE_STATE_ACTIVE)
       registry_->DispatchStatusChangeEvent(this);
   }
 
-  virtual void DidToggleFullscreenModeForTab(bool entered_fullscreen) override {
+  void DidToggleFullscreenModeForTab(bool entered_fullscreen) override {
     is_fullscreened_ = entered_fullscreen;
     if (capture_state_ == tab_capture::TAB_CAPTURE_STATE_ACTIVE)
       registry_->DispatchStatusChangeEvent(this);
   }
 
-  virtual void WebContentsDestroyed() override {
+  void WebContentsDestroyed() override {
     registry_->KillRequest(this);  // Deletes |this|.
   }
 
  private:
   const std::string extension_id_;
   TabCaptureRegistry* const registry_;
   TabCaptureState capture_state_;
   bool is_verified_;
   bool is_fullscreened_;
 
@@ skipping 220 matching lines @@
        it != requests_.end(); ++it) {
     if ((*it) == request) {
       requests_.erase(it);
       return;
     }
   }
   NOTREACHED();
 }
 
 }  // namespace extensions