[GCM] Add ConnectionListener support, and hook up to debug page

google_apis/gcm/engine/fake_connection_factory.h

 // Copyright 2013 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 GOOGLE_APIS_GCM_ENGINE_FAKE_CONNECTION_FACTORY_H_
 #define GOOGLE_APIS_GCM_ENGINE_FAKE_CONNECTION_FACTORY_H_
 
 #include "base/memory/scoped_ptr.h"
 #include "google_apis/gcm/engine/connection_factory.h"
 
 namespace gcm {
 
 class FakeConnectionHandler;
 
 // A connection factory that mocks out real connections, using a fake connection
 // handler instead.
 class FakeConnectionFactory : public ConnectionFactory {
  public:
   FakeConnectionFactory();
   virtual ~FakeConnectionFactory();
 
   // ConnectionFactory implementation.
   virtual void Initialize(
       const BuildLoginRequestCallback& request_builder,
       const ConnectionHandler::ProtoReceivedCallback& read_callback,
       const ConnectionHandler::ProtoSentCallback& write_callback) OVERRIDE;
   virtual ConnectionHandler* GetConnectionHandler() const OVERRIDE;
   virtual void Connect() OVERRIDE;
   virtual bool IsEndpointReachable() const OVERRIDE;
+  virtual std::string GetConnectionStateString() const OVERRIDE;
   virtual base::TimeTicks NextRetryAttempt() const OVERRIDE;
   virtual void SignalConnectionReset(ConnectionResetReason reason) OVERRIDE;
+  virtual void SetConnectionListener(ConnectionListener* listener) OVERRIDE;
 
   // Whether a connection reset has been triggered and is yet to run.
   bool reconnect_pending() const { return reconnect_pending_; }
 
   // Whether connection resets should be handled immediately or delayed until
   // release.
   void set_delay_reconnect(bool should_delay) {
     delay_reconnect_ = should_delay;
   }
 
  private:
   scoped_ptr<FakeConnectionHandler> connection_handler_;
 
   BuildLoginRequestCallback request_builder_;
 
   // Logic for handling connection resets.
   bool reconnect_pending_;
   bool delay_reconnect_;
 
   DISALLOW_COPY_AND_ASSIGN(FakeConnectionFactory);
 };
 
 }  // namespace gcm
 
 #endif  // GOOGLE_APIS_GCM_ENGINE_FAKE_CONNECTION_FACTORY_H_