Mojo: Move PlatformChannelPair to its own files.

mojo/system/platform_channel_pair.cc

-// Copyright 2013 The Chromium Authors. All rights reserved.
+// Copyright 2014 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 "mojo/system/platform_channel.h"
+#include "mojo/system/platform_channel_pair.h"
 
 #include "base/logging.h"
+#include "mojo/system/platform_channel.h"
 
 namespace mojo {
 namespace system {
 
-PlatformChannel::~PlatformChannel() {
-  handle_.CloseIfNecessary();
-}
-
-// static
-scoped_ptr<PlatformChannel> PlatformChannel::CreateFromHandle(
-    const PlatformChannelHandle& handle) {
-  DCHECK(handle.is_valid());
-  scoped_ptr<PlatformChannel> rv(new PlatformChannel());
-  *rv->mutable_handle() = handle;
-  return rv.Pass();
-}
-
-PlatformChannelHandle PlatformChannel::PassHandle() {
-  DCHECK(is_valid());
-  PlatformChannelHandle rv = handle_;
-  handle_ = PlatformChannelHandle();
-  return rv;
-}
-
-PlatformChannel::PlatformChannel() {
-}
-
-// -----------------------------------------------------------------------------
-
 PlatformChannelPair::~PlatformChannelPair() {
   server_handle_.CloseIfNecessary();
   client_handle_.CloseIfNecessary();
 }
 
 scoped_ptr<PlatformChannel> PlatformChannelPair::CreateServerChannel() {
   if (!server_handle_.is_valid()) {
     LOG(WARNING) << "Server handle invalid";
     return scoped_ptr<PlatformChannel>();
   }
@@ skipping 11 matching lines @@
   }
 
   scoped_ptr<PlatformChannel> rv =
       PlatformChannel::CreateFromHandle(client_handle_);
   client_handle_ = PlatformChannelHandle();
   return rv.Pass();
 }
 
 }  // namespace system
 }  // namespace mojo