Adding a unit test to verify the IPC channel between the network and desktop processes.

remoting/host/ipc_desktop_environment.h

 // Copyright (c) 2012 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 REMOTING_HOST_IPC_DESKTOP_ENVIRONMENT_H_
 #define REMOTING_HOST_IPC_DESKTOP_ENVIRONMENT_H_
 
 #include <map>
 #include <string>
 
@@ skipping 19 matching lines @@
 
 // A variant of desktop environment integrating with the desktop by means of
 // a helper process and talking to that process via IPC.
 class IpcDesktopEnvironment : public DesktopEnvironment {
  public:
   // |desktop_session_connector| is used to bind DesktopSessionProxy to
   // a desktop session, to be notified every time the desktop process is
   // restarted.
   IpcDesktopEnvironment(
       scoped_refptr<base::SingleThreadTaskRunner> caller_task_runner,
+      scoped_refptr<base::SingleThreadTaskRunner> io_task_runner,
       const std::string& client_jid,
       const base::Closure& disconnect_callback,
       base::WeakPtr<DesktopSessionConnector> desktop_session_connector);
   virtual ~IpcDesktopEnvironment();
 
   // DesktopEnvironment implementation.
   virtual scoped_ptr<AudioCapturer> CreateAudioCapturer(
       scoped_refptr<base::SingleThreadTaskRunner> audio_task_runner) OVERRIDE;
   virtual scoped_ptr<EventExecutor> CreateEventExecutor(
       scoped_refptr<base::SingleThreadTaskRunner> input_task_runner,
@@ skipping 24 matching lines @@
 // Used to create IpcDesktopEnvironment objects integrating with the desktop via
 // a helper process and talking to that process via IPC.
 class IpcDesktopEnvironmentFactory
     : public DesktopEnvironmentFactory,
       public DesktopSessionConnector {
  public:
   // Passes a reference to the IPC channel connected to the daemon process and
   // relevant task runners. |daemon_channel| must outlive this object.
   IpcDesktopEnvironmentFactory(
       scoped_refptr<base::SingleThreadTaskRunner> caller_task_runner,
+      scoped_refptr<base::SingleThreadTaskRunner> io_task_runner,
       IPC::ChannelProxy* daemon_channel);
   virtual ~IpcDesktopEnvironmentFactory();
 
   // DesktopEnvironmentFactory implementation.
   virtual scoped_ptr<DesktopEnvironment> Create(
       const std::string& client_jid,
       const base::Closure& disconnect_callback) OVERRIDE;
   virtual bool SupportsAudioCapture() const OVERRIDE;
 
   // DesktopSessionConnector implementation.
   virtual void ConnectTerminal(
       scoped_refptr<DesktopSessionProxy> desktop_session_proxy) OVERRIDE;
   virtual void DisconnectTerminal(
       scoped_refptr<DesktopSessionProxy> desktop_session_proxy) OVERRIDE;
   virtual void OnDesktopSessionAgentAttached(
       int terminal_id,
-      IPC::PlatformFileForTransit desktop_process,
+      base::ProcessHandle desktop_process,
       IPC::PlatformFileForTransit desktop_pipe) OVERRIDE;
   virtual void OnTerminalDisconnected(int terminal_id) OVERRIDE;
 
  private:
   // Task runner on which public methods of this class should be called.
   scoped_refptr<base::SingleThreadTaskRunner> caller_task_runner_;
 
+  // Task runner used for running background I/O.
+  scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_;
+
   // IPC channel connected to the daemon process.
   IPC::ChannelProxy* daemon_channel_;
 
   // List of DesktopEnvironment instances we've told the daemon process about.
   typedef std::map<int, scoped_refptr<DesktopSessionProxy> >
       ActiveConnectionsList;
   ActiveConnectionsList active_connections_;
 
   // Factory for weak pointers to DesktopSessionConnector interface.
   base::WeakPtrFactory<DesktopSessionConnector> connector_factory_;
 
   // Next desktop session ID. IDs are allocated sequentially starting from 0.
   // This gives us more than 67 years of unique IDs assuming a new ID is
   // allocated every second.
   int next_id_;
 
   DISALLOW_COPY_AND_ASSIGN(IpcDesktopEnvironmentFactory);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_IPC_DESKTOP_ENVIRONMENT_H_