ChannelMojo should use PID from the bootstrap Channel.

ipc/mojo/ipc_channel_mojo.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_channel_mojo.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/lazy_instance.h"
 #include "ipc/ipc_listener.h"
@@ skipping 309 matching lines @@
   }
 
   return message_reader_->Send(make_scoped_ptr(message));
 }
 
 base::ProcessId ChannelMojo::GetPeerPID() const {
   return peer_pid_;
 }
 
 base::ProcessId ChannelMojo::GetSelfPID() const {
-  return base::GetCurrentProcId();
+  return bootstrap_->GetSelfPID();
 }
 
 void ChannelMojo::OnClientLaunched(base::ProcessHandle handle) {
   bootstrap_->OnClientLaunched(handle);
 }
 
 void ChannelMojo::OnMessageReceived(Message& message) {
   TRACE_EVENT2("ipc,toplevel", "ChannelMojo::OnMessageReceived",
                "class", IPC_MESSAGE_ID_CLASS(message.type()),
                "line", IPC_MESSAGE_ID_LINE(message.type()));
@@ skipping 81 matching lines @@
     if (!ok) {
       DLOG(ERROR) << "Failed to add new Mojo handle.";
       return MOJO_RESULT_UNKNOWN;
     }
   }
 
   return MOJO_RESULT_OK;
 }
 
 }  // namespace IPC