[Chromoting] Moving the I/O thread out of DaemonProcess (so it can be shared if needed).

remoting/host/daemon_process.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_DAEMON_PROCESS_H_
 #define REMOTING_HOST_DAEMON_PROCESS_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
@@ skipping 16 matching lines @@
 // This class implements core of the daemon process. It manages the networking
 // process running at lower privileges and maintains the list of virtual
 // terminals.
 class DaemonProcess : public Stoppable, public IPC::Listener {
  public:
   virtual ~DaemonProcess();
 
   // Creates a platform-specific implementation of the daemon process object.
   static scoped_ptr<DaemonProcess> Create(
       scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
+      scoped_refptr<base::SingleThreadTaskRunner> io_task_runner,
       const base::Closure& stopped_callback);
 
   // IPC::Listener implementation.
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 
  protected:
   DaemonProcess(scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
+                scoped_refptr<base::SingleThreadTaskRunner> io_task_runner,
                 const base::Closure& stopped_callback);
 
   // Reads the host configuration and launches the networking process.
   void Init();
 
   // Stoppable implementation.
   virtual void DoStop() OVERRIDE;
 
   // Launches the network process and establishes an IPC channel with it.
   virtual bool LaunchNetworkProcess() = 0;
 
  private:
   // The main task runner. Typically it is the UI message loop.
   scoped_refptr<base::SingleThreadTaskRunner> main_task_runner_;
 
-  // A dedicated thread for handling IPC requests.
-  scoped_ptr<base::Thread> ipc_thread_;
+  // Handles IPC and background I/O tasks.
+  scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_;
 
   // The IPC channel connecting the daemon process to the networking process.
   scoped_ptr<IPC::ChannelProxy> network_process_channel_;
 
   DISALLOW_COPY_AND_ASSIGN(DaemonProcess);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_DAEMON_PROCESS_H_