Use SharedPersistentMemoryAllocator to share field trial state

content/browser/utility_process_host_impl.cc

 // Copyright (c) 2012 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 "content/browser/utility_process_host_impl.h"
 
 #include <utility>
 
 #include "base/base_switches.h"
 #include "base/bind.h"
@@ skipping 326 matching lines @@
 
 #if defined(OS_WIN)
     // Let the utility process know if it is intended to be elevated.
     if (run_elevated_)
       cmd_line->AppendSwitch(switches::kUtilityProcessRunningElevated);
 #endif
 
     process_->Launch(new UtilitySandboxedProcessLauncherDelegate(
                          exposed_dir_, run_elevated_, no_sandbox_, env_,
                          process_->GetHost()),
-                     cmd_line, nullptr, true);
+                     cmd_line, true);
   }
 
   return true;
 }
 
 bool UtilityProcessHostImpl::OnMessageReceived(const IPC::Message& message) {
   if (!client_.get())
     return true;
 
   client_task_runner_->PostTask(
@@ skipping 40 matching lines @@
     base::WeakPtr<UtilityProcessHostImpl> host,
     int error_code) {
   if (!host)
     return;
 
   host->OnProcessLaunchFailed(error_code);
   delete host.get();
 }
 
 }  // namespace content