Support using a Mojo message pipe in a ChannelHandle.

ipc/ipc_channel_common.cc

 // 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 "build/build_config.h"
 #include "ipc/ipc_channel.h"
+#include "ipc/ipc_channel_mojo.h"
 
 namespace IPC {
 
 // static
 std::unique_ptr<Channel> Channel::CreateClient(
     const IPC::ChannelHandle& channel_handle,
     Listener* listener) {
+  if (channel_handle.mojo_handle.is_valid()) {
+    return ChannelMojo::Create(
+        mojo::ScopedMessagePipeHandle(channel_handle.mojo_handle),
+        Channel::MODE_CLIENT, listener);
+  }
   return Channel::Create(channel_handle, Channel::MODE_CLIENT, listener);
 }
 
 // static
 std::unique_ptr<Channel> Channel::CreateNamedServer(
     const IPC::ChannelHandle& channel_handle,
     Listener* listener) {
   return Channel::Create(channel_handle, Channel::MODE_NAMED_SERVER, listener);
 }
 
@@ skipping 11 matching lines @@
     Listener* listener) {
   return Channel::Create(channel_handle, Channel::MODE_OPEN_NAMED_SERVER,
                          listener);
 }
 #endif
 
 // static
 std::unique_ptr<Channel> Channel::CreateServer(
     const IPC::ChannelHandle& channel_handle,
     Listener* listener) {
+  if (channel_handle.mojo_handle.is_valid()) {
+    return ChannelMojo::Create(
+        mojo::ScopedMessagePipeHandle(channel_handle.mojo_handle),
+        Channel::MODE_SERVER, listener);
+  }
   return Channel::Create(channel_handle, Channel::MODE_SERVER, listener);
 }
 
 Channel::~Channel() {
 }
 
 bool Channel::IsSendThreadSafe() const {
   return false;
 }
 
 void Channel::OnSetAttachmentBrokerEndpoint() {
   CHECK(!did_start_connect_);
 }
 
 void Channel::WillConnect() {
   did_start_connect_ = true;
 }
 
 }  // namespace IPC