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

android_webview/browser/renderer_host/aw_resource_dispatcher_host_delegate.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 "android_webview/browser/renderer_host/aw_resource_dispatcher_host_delegate.h"
 
 #include <string>
 
 #include "android_webview/browser/aw_contents_io_thread_client.h"
 #include "android_webview/browser/aw_login_delegate.h"
@@ skipping 45 matching lines @@
 // Calls through the IoThreadClient to check the embedders settings to determine
 // if the request should be cancelled. There may not always be an IoThreadClient
 // available for the |render_process_id|, |render_frame_id| pair (in the case of
 // newly created pop up windows, for example) and in that case the request and
 // the client callbacks will be deferred the request until a client is ready.
 class IoThreadClientThrottle : public content::ResourceThrottle {
  public:
   IoThreadClientThrottle(int render_process_id,
                          int render_frame_id,
                          net::URLRequest* request);
-  virtual ~IoThreadClientThrottle();
+  ~IoThreadClientThrottle() override;
 
   // From content::ResourceThrottle
-  virtual void WillStartRequest(bool* defer) override;
-  virtual void WillRedirectRequest(const GURL& new_url, bool* defer) override;
-  virtual const char* GetNameForLogging() const override;
+  void WillStartRequest(bool* defer) override;
+  void WillRedirectRequest(const GURL& new_url, bool* defer) override;
+  const char* GetNameForLogging() const override;
 
   void OnIoThreadClientReady(int new_render_process_id,
                              int new_render_frame_id);
   bool MaybeBlockRequest();
   bool ShouldBlockRequest();
   int render_process_id() const { return render_process_id_; }
   int render_frame_id() const { return render_frame_id_; }
 
  private:
   int render_process_id_;
@@ skipping 334 matching lines @@
       net::HttpRequestHeaders headers;
       headers.AddHeadersFromString(extra_headers);
       for (net::HttpRequestHeaders::Iterator it(headers); it.GetNext(); ) {
         request->SetExtraRequestHeaderByName(it.name(), it.value(), false);
       }
     }
   }
 }
 
 }  // namespace android_webview