ChannelMojo should use PID from the bootstrap Channel.

ipc/mojo/ipc_mojo_bootstrap.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 "ipc/mojo/ipc_mojo_bootstrap.h"
 
 #include "base/logging.h"
 #include "base/process/process_handle.h"
 #include "ipc/ipc_message_utils.h"
 #include "ipc/ipc_platform_file.h"
@@ skipping 182 matching lines @@
 
 void MojoBootstrap::Init(scoped_ptr<Channel> channel, Delegate* delegate) {
   channel_ = channel.Pass();
   delegate_ = delegate;
 }
 
 bool MojoBootstrap::Connect() {
   return channel_->Connect();
 }
 
+base::ProcessId MojoBootstrap::GetSelfPID() const {
+  return channel_->GetSelfPID();
+}
+
 void MojoBootstrap::OnBadMessageReceived(const Message& message) {
   Fail();
 }
 
 void MojoBootstrap::OnChannelError() {
   if (state_ == STATE_READY || state_ == STATE_ERROR)
     return;
   DLOG(WARNING) << "Detected error on Mojo bootstrap channel.";
   Fail();
 }
@@ skipping 15 matching lines @@
 int MojoBootstrap::GetClientFileDescriptor() const {
   return channel_->GetClientFileDescriptor();
 }
 
 base::ScopedFD MojoBootstrap::TakeClientFileDescriptor() {
   return channel_->TakeClientFileDescriptor();
 }
 #endif  // defined(OS_POSIX) && !defined(OS_NACL)
 
 }  // namespace IPC