Add SetSupportsQuic method to explicitly specify server that supports QUIC.

components/cronet/android/url_request_context_adapter.h

 // 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.
 
 #ifndef COMPONENTS_CRONET_ANDROID_URL_REQUEST_CONTEXT_ADAPTER_H_
 #define COMPONENTS_CRONET_ANDROID_URL_REQUEST_CONTEXT_ADAPTER_H_
 
 #include <string>
 
 #include "base/compiler_specific.h"
@@ skipping 59 matching lines @@
   scoped_refptr<URLRequestContextAdapterDelegate> delegate_;
   scoped_ptr<net::URLRequestContext> context_;
   std::string user_agent_;
   base::Thread* network_thread_;
   scoped_ptr<net::NetworkChangeNotifier> network_change_notifier_;
   scoped_ptr<NetLogObserver> net_log_observer_;
   scoped_ptr<net::NetLogLogger> net_log_logger_;
 
   virtual ~URLRequestContextAdapter();
 
-  // Initializes |context_| on the IO thread.
+  // Initializes |context_| on the Network thread.
   void InitializeURLRequestContext(scoped_ptr<URLRequestContextConfig> config);
 
   DISALLOW_COPY_AND_ASSIGN(URLRequestContextAdapter);
 };
 
 }  // namespace cronet
 
 #endif  // COMPONENTS_CRONET_ANDROID_URL_REQUEST_CONTEXT_ADAPTER_H_