Add a getter for system url request context in CastBrowserContext.

chromecast/browser/cast_browser_context.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 CHROMECAST_BROWSER_CAST_BROWSER_CONTEXT_H_
 #define CHROMECAST_BROWSER_CAST_BROWSER_CONTEXT_H_
 
 #include "base/files/file_path.h"
 #include "base/macros.h"
 #include "content/public/browser/browser_context.h"
@@ skipping 30 matching lines @@
           const base::FilePath& partition_path,
           bool in_memory) override;
   virtual content::ResourceContext* GetResourceContext() override;
   virtual content::DownloadManagerDelegate*
       GetDownloadManagerDelegate() override;
   virtual content::BrowserPluginGuestManager* GetGuestManager() override;
   virtual storage::SpecialStoragePolicy* GetSpecialStoragePolicy() override;
   virtual content::PushMessagingService* GetPushMessagingService() override;
   virtual content::SSLHostStateDelegate* GetSSLHostStateDelegate() override;
 
+  net::URLRequestContextGetter* GetSystemRequestContext();
+
  private:
   class CastResourceContext;
 
   // Performs initialization of the CastBrowserContext while IO is still
   // allowed on the current thread.
   void InitWhileIOAllowed();
 
   URLRequestContextFactory* const url_request_context_factory_;
   base::FilePath path_;
   scoped_ptr<CastResourceContext> resource_context_;
   scoped_ptr<CastDownloadManagerDelegate> download_manager_delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(CastBrowserContext);
 };
 
 }  // namespace shell
 }  // namespace chromecast
 
 #endif  // CHROMECAST_BROWSER_CAST_BROWSER_CONTEXT_H_