Get service processes working on Mac and Linux.

chrome/service/service_process.cc

 // Copyright (c) 2010 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 "chrome/service/service_process.h"
 
 #include <algorithm>
 
 #include "base/basictypes.h"
 #include "base/command_line.h"
@@ skipping 123 matching lines @@
   if (cloud_print_proxy_enabled) {
     GetCloudPrintProxy()->EnableForUser(lsid);
   }
 
   VLOG(1) << "Starting Service Process IPC Server";
   ipc_server_.reset(new ServiceIPCServer(GetServiceProcessChannelName()));
   ipc_server_->Init();
 
   // After the IPC server has started we signal that the service process is
   // ready.
-  ServiceProcessState::GetInstance()->SignalReady(
-      NewRunnableMethod(this, &ServiceProcess::Shutdown));
+  if (!ServiceProcessState::GetInstance()->SignalReady(
+          io_thread_->message_loop(),
+          NewRunnableMethod(this, &ServiceProcess::Shutdown))) {
+    return false;
+  }
 
   // See if we need to stay running.
   ScheduleShutdownCheck();
   return true;
 }
 
 bool ServiceProcess::Teardown() {
   service_prefs_.reset();
   cloud_print_proxy_.reset();
 
@@ skipping 104 matching lines @@
 }
 
 ServiceProcess::~ServiceProcess() {
   Teardown();
   g_service_process = NULL;
 }
 
 // Disable refcounting for runnable method because it is really not needed
 // when we post tasks on the main message loop.
 DISABLE_RUNNABLE_METHOD_REFCOUNT(ServiceProcess);