Getting service process on Mac to handle having things moved/changed underneath it.

chrome/common/service_process_util_posix.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/common/service_process_util_posix.h"
 
 #include "base/basictypes.h"
 #include "base/message_loop_proxy.h"
 
 namespace {
@@ skipping 78 matching lines @@
   state_->sockets_[1] = -1;
   state_->set_action_ = false;
   return true;
 }
 
 bool ServiceProcessState::SignalReady(
     base::MessageLoopProxy* message_loop_proxy, Task* shutdown_task) {
   CHECK(state_);
   CHECK_EQ(g_signal_socket, -1);
 
-#if defined(OS_LINUX)
-  state_->running_lock_.reset(TakeServiceRunningLock(true));
-  if (state_->running_lock_.get() == NULL) {
+  if (!SignalReadyPlatformSpecific()) {
     return false;
   }
-#endif // OS_LINUX
+
   state_->shut_down_monitor_.reset(
       new ServiceProcessShutdownMonitor(shutdown_task));
   if (pipe(state_->sockets_) < 0) {
     PLOG(ERROR) << "pipe";
     return false;
   }
   message_loop_proxy->PostTask(FROM_HERE,
       NewRunnableMethod(state_, &ServiceProcessState::StateData::SignalReady));
   return true;
 }
 
 void ServiceProcessState::TearDownState() {
   g_signal_socket = -1;
   if (state_) {
     if (state_->sockets_[0] != -1) {
       close(state_->sockets_[0]);
     }
     if (state_->sockets_[1] != -1) {
       close(state_->sockets_[1]);
     }
     if (state_->set_action_) {
       if (sigaction(SIGTERM, &state_->old_action_, NULL) < 0) {
         PLOG(ERROR) << "sigaction";
       }
     }
     state_->Release();
     state_ = NULL;
   }
 }