[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 "components/proxy_config/pref_proxy_config_tracker_impl.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;
 }
 
 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,
+      std::unique_ptr<net::ProxyConfigService> proxy_config_service);
 
   // ConnectivityChecker implementation:
   bool Connected() const override;
   void Check() override;
 
  protected:
   ~ConnectivityCheckerImpl() override;
 
  private:
   // UrlRequest::Delegate implementation:
@@ skipping 44 matching lines @@
 
   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_;
 
+  std::unique_ptr<net::ProxyConfigService> proxy_config_service_;
+
   DISALLOW_COPY_AND_ASSIGN(ConnectivityCheckerImpl);
 };
 
 }  // namespace chromecast
 
 #endif  // CHROMECAST_NET_CONNECTIVITY_CHECKER_IMPL_H_