Standardize usage of virtual/override/final specifiers.

chrome/browser/ui/views/session_crashed_bubble_view.cc

 // 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.
 
 #include "chrome/browser/ui/views/session_crashed_bubble_view.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 86 matching lines @@
 
 // A helper class that listens to browser removal event.
 class SessionCrashedBubbleView::BrowserRemovalObserver
     : public chrome::BrowserListObserver {
  public:
   explicit BrowserRemovalObserver(Browser* browser) : browser_(browser) {
     DCHECK(browser_);
     BrowserList::AddObserver(this);
   }
 
-  virtual ~BrowserRemovalObserver() {
-    BrowserList::RemoveObserver(this);
-  }
+  ~BrowserRemovalObserver() override { BrowserList::RemoveObserver(this); }
 
   // Overridden from chrome::BrowserListObserver.
-  virtual void OnBrowserRemoved(Browser* browser) override {
+  void OnBrowserRemoved(Browser* browser) override {
     if (browser == browser_)
       browser_ = NULL;
   }
 
   Browser* browser() const { return browser_; }
 
  private:
   Browser* browser_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserRemovalObserver);
@@ skipping 315 matching lines @@
   GetWidget()->Close();
 }
 
 bool ShowSessionCrashedBubble(Browser* browser) {
   if (IsBubbleUIEnabled()) {
     SessionCrashedBubbleView::Show(browser);
     return true;
   }
   return false;
 }