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

content/browser/web_contents/web_contents_impl.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 "content/browser/web_contents/web_contents_impl.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/debug/crash_logging.h"
@@ skipping 241 matching lines @@
 // WebContentsImpl::DestructionObserver ----------------------------------------
 
 class WebContentsImpl::DestructionObserver : public WebContentsObserver {
  public:
   DestructionObserver(WebContentsImpl* owner, WebContents* watched_contents)
       : WebContentsObserver(watched_contents),
         owner_(owner) {
   }
 
   // WebContentsObserver:
-  virtual void WebContentsDestroyed() override {
+  void WebContentsDestroyed() override {
     owner_->OnWebContentsDestroyed(
         static_cast<WebContentsImpl*>(web_contents()));
   }
 
  private:
   WebContentsImpl* owner_;
 
   DISALLOW_COPY_AND_ASSIGN(DestructionObserver);
 };
 
@@ skipping 4077 matching lines @@
   node->render_manager()->ResumeResponseDeferredAtStart();
 }
 
 void WebContentsImpl::SetForceDisableOverscrollContent(bool force_disable) {
   force_disable_overscroll_content_ = force_disable;
   if (view_)
     view_->SetOverscrollControllerEnabled(CanOverscrollContent());
 }
 
 }  // namespace content