[Chromecast] Add proxy server support to chromecast

chromecast/net/connectivity_checker_impl.h

 // Copyright 2015 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_NET_CONNECTIVITY_CHECKER_IMPL_H_
 #define CHROMECAST_NET_CONNECTIVITY_CHECKER_IMPL_H_
 
 #include "base/cancelable_callback.h"
 #include "base/macros.h"
 #include "chromecast/net/connectivity_checker.h"
 #include "net/base/network_change_notifier.h"
 #include "net/url_request/url_request.h"
 
 class GURL;
 
 namespace base {
 class SingleThreadTaskRunner;
 }
 
 namespace net {
 class SSLInfo;
 class URLRequest;
 class URLRequestContext;
+class URLRequestContextGetter;
 }
 
 namespace chromecast {
 
 // Simple class to check network connectivity by sending a HEAD http request
 // to given url.
 class ConnectivityCheckerImpl
     : public ConnectivityChecker,
       public net::URLRequest::Delegate,
       public net::NetworkChangeNotifier::NetworkChangeObserver {
  public:
   // Connectivity checking and initialization will run on task_runner.
   explicit ConnectivityCheckerImpl(
-      const scoped_refptr<base::SingleThreadTaskRunner>& task_runner);
+      const scoped_refptr<base::SingleThreadTaskRunner>& task_runner,
+      net::URLRequestContextGetter* url_request_context_getter);
 
   // ConnectivityChecker implementation:
   bool Connected() const override;
   void Check() override;
 
  protected:
   ~ConnectivityCheckerImpl() override;
 
  private:
   // UrlRequest::Delegate implementation:
   void OnResponseStarted(net::URLRequest* request) override;
   void OnReadCompleted(net::URLRequest* request, int bytes_read) override;
   void OnSSLCertificateError(net::URLRequest* request,
                              const net::SSLInfo& ssl_info,
                              bool fatal) override;
 
   // Initializes ConnectivityChecker
-  void Initialize();
+  void Initialize(net::URLRequestContextGetter* url_request_context_getter);
 
   // net::NetworkChangeNotifier::NetworkChangeObserver implementation:
   void OnNetworkChanged(
       net::NetworkChangeNotifier::ConnectionType type) override;
 
   void OnNetworkChangedInternal();
 
   // Cancels current connectivity checking in progress.
   void Cancel();
 
   // Sets connectivity and alerts observers if it has changed
   void SetConnected(bool connected);
 
   enum class ErrorType {
     BAD_HTTP_STATUS = 1,
     SSL_CERTIFICATE_ERROR = 2,
     REQUEST_TIMEOUT = 3,
   };
 
   // Called when URL request failed.
   void OnUrlRequestError(ErrorType type);
 
   // Called when URL request timed out.
   void OnUrlRequestTimeout();
 
   void CheckInternal();
 
   std::unique_ptr<GURL> connectivity_check_url_;
-  std::unique_ptr<net::URLRequestContext> url_request_context_;
+  net::URLRequestContext* url_request_context_;
   std::unique_ptr<net::URLRequest> url_request_;
   const scoped_refptr<base::SingleThreadTaskRunner> task_runner_;
 
   // connected_lock_ protects access to connected_ which is shared across
   // threads.
   mutable base::Lock connected_lock_;
   bool connected_;
 
   net::NetworkChangeNotifier::ConnectionType connection_type_;
   // Number of connectivity check errors.
   unsigned int check_errors_;
   bool network_changed_pending_;
   // Timeout handler for connectivity checks.
   // Note: Cancelling this timeout can cause the destructor for this class to be
   // called.
   base::CancelableCallback<void()> timeout_;
 
   DISALLOW_COPY_AND_ASSIGN(ConnectivityCheckerImpl);
 };
 
 }  // namespace chromecast
 
 #endif  // CHROMECAST_NET_CONNECTIVITY_CHECKER_IMPL_H_