Update {virtual,override,final} to follow C++11 style.

components/navigation_interception/intercept_navigation_delegate.h

 // 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.
 
 #ifndef COMPONENTS_NAVIGATION_INTERCEPTION_INTERCEPT_NAVIGATION_DELEGATE_H_
 #define COMPONENTS_NAVIGATION_INTERCEPTION_INTERCEPT_NAVIGATION_DELEGATE_H_
 
 #include "base/android/jni_weak_ref.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/supports_user_data.h"
@@ skipping 20 matching lines @@
 // To us this class:
 // 1) the Java-side interface implementation must be associated (via the
 //    Associate method) with a WebContents for which URLRequests are to be
 //    intercepted,
 // 2) the ResourceThrottle obtained via CreateThrottleFor must be associated
 //    with the URLRequests in the ResourceDispatcherHostDelegate
 //    implementation.
 class InterceptNavigationDelegate : public base::SupportsUserData::Data {
  public:
   InterceptNavigationDelegate(JNIEnv* env, jobject jdelegate);
-  virtual ~InterceptNavigationDelegate();
+  ~InterceptNavigationDelegate() override;
 
   // Associates the InterceptNavigationDelegate with a WebContents using the
   // SupportsUserData mechanism.
   // As implied by the use of scoped_ptr, the WebContents will assume ownership
   // of |delegate|.
   static void Associate(content::WebContents* web_contents,
                         scoped_ptr<InterceptNavigationDelegate> delegate);
   // Gets the InterceptNavigationDelegate associated with the WebContents,
   // can be null.
   static InterceptNavigationDelegate* Get(content::WebContents* web_contents);
 
   // Creates a InterceptNavigationResourceThrottle that will direct all
   // callbacks to the InterceptNavigationDelegate.
   static content::ResourceThrottle* CreateThrottleFor(
       net::URLRequest* request);
 
   virtual bool ShouldIgnoreNavigation(
       const NavigationParams& navigation_params);
  private:
   JavaObjectWeakGlobalRef weak_jdelegate_;
 };
 
 bool RegisterInterceptNavigationDelegate(JNIEnv* env);
 
 }  // namespace navigation_interception
 
 #endif  // COMPONENTS_NAVIGATION_INTERCEPTION_INTERCEPT_NAVIGATION_DELEGATE_H_