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

components/cronet/android/url_request_context_adapter.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 "components/cronet/android/url_request_context_adapter.h"
 
 #include <limits>
 
 #include "base/bind.h"
 #include "base/files/file_util.h"
@@ skipping 21 matching lines @@
 
 // MessageLoop on the main thread, which is where objects that receive Java
 // notifications generally live.
 base::MessageLoop* g_main_message_loop = nullptr;
 
 net::NetworkChangeNotifier* g_network_change_notifier = nullptr;
 
 class BasicNetworkDelegate : public net::NetworkDelegateImpl {
  public:
   BasicNetworkDelegate() {}
-  virtual ~BasicNetworkDelegate() {}
+  ~BasicNetworkDelegate() override {}
 
  private:
   // net::NetworkDelegate implementation.
   int OnBeforeURLRequest(net::URLRequest* request,
                          const net::CompletionCallback& callback,
                          GURL* new_url) override {
     return net::OK;
   }
 
   int OnBeforeSendHeaders(net::URLRequest* request,
@@ skipping 260 matching lines @@
     net_log_logger_.reset();
   }
 }
 
 void NetLogObserver::OnAddEntry(const net::NetLog::Entry& entry) {
   VLOG(2) << "Net log entry: type=" << entry.type()
           << ", source=" << entry.source().type << ", phase=" << entry.phase();
 }
 
 }  // namespace cronet