Revert of Use a token to initialise ChannelMojo and MojoApplication everywhere.

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 241 matching lines @@
   // launches a UtilityProcessHost.
   process_.reset(new BrowserChildProcessHostImpl(PROCESS_TYPE_UTILITY, this));
   process_->SetName(name_);
 
   std::string channel_id = process_->GetHost()->CreateChannel();
   if (channel_id.empty()) {
     NotifyAndDelete();
     return false;
   }
 
+  std::string mojo_token = mojo_application_host_->InitWithToken();
+
   if (RenderProcessHost::run_renderer_in_process()) {
     DCHECK(g_utility_main_thread_factory);
     // See comment in RenderProcessHostImpl::Init() for the background on why we
     // support single process mode this way.
     in_process_thread_.reset(
         g_utility_main_thread_factory(InProcessChildThreadParams(
             channel_id, BrowserThread::UnsafeGetMessageLoopForThread(
                             BrowserThread::IO)->task_runner(),
-            std::string(), mojo_application_host_->GetToken())));
+            mojo::MessagePipeHandle(), mojo_token)));
     in_process_thread_->Start();
   } else {
     const base::CommandLine& browser_command_line =
         *base::CommandLine::ForCurrentProcess();
 
     bool has_cmd_prefix = browser_command_line.HasSwitch(
         switches::kUtilityCmdPrefix);
 
     #if defined(OS_ANDROID)
       // readlink("/prof/self/exe") sometimes fails on Android at startup.
@@ skipping 58 matching lines @@
                                  exposed_dir_);
     }
 
 #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
 
     cmd_line->AppendSwitchASCII(switches::kMojoApplicationChannelToken,
-                                mojo_application_host_->GetToken());
+                                mojo_token);
 
     process_->Launch(
         new UtilitySandboxedProcessLauncherDelegate(exposed_dir_,
                                                     run_elevated_,
                                                     no_sandbox_, env_,
                                                     process_->GetHost()),
         cmd_line,
         true);
   }
 
@@ skipping 45 matching lines @@
 void UtilityProcessHostImpl::NotifyLaunchFailedAndDelete(
     base::WeakPtr<UtilityProcessHostImpl> host) {
   if (!host)
     return;
 
   host->OnProcessLaunchFailed();
   delete host.get();
 }
 
 }  // namespace content