Introduce IPC::Channel::Create*() to ensure it being heap-allocated.

cloud_print/service/win/service_listener.cc

 // 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.
 
 #include "cloud_print/service/win/service_listener.h"
 
 #include "base/bind.h"
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/json/json_writer.h"
@@ skipping 73 matching lines @@
   channel_.reset();
 }
 
 void ServiceListener::Connect() {
   base::win::ScopedHandle handle(
       ::CreateFile(SetupListener::kSetupPipeName, GENERIC_READ | GENERIC_WRITE,
                    0, NULL, OPEN_EXISTING,
                    SECURITY_SQOS_PRESENT | SECURITY_IDENTIFICATION |
                    FILE_FLAG_OVERLAPPED, NULL));
   if (handle.IsValid()) {
-    channel_.reset(new IPC::Channel(IPC::ChannelHandle(handle),
-                                    IPC::Channel::MODE_CLIENT, this));
+    channel_ = IPC::Channel::CreateClient(IPC::ChannelHandle(handle),
+                                          this);
     channel_->Connect();
   } else {
     ipc_thread_->message_loop()->PostDelayedTask(
         FROM_HERE,
         base::Bind(&ServiceListener::Connect, base::Unretained(this)),
         base::TimeDelta::FromMilliseconds(500));
   }
 }