Always use ChannelMojo for content child processes.

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 20 matching lines @@
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/content_browser_client.h"
 #include "content/public/browser/utility_process_host_client.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/mojo_channel_switches.h"
 #include "content/public/common/mojo_shell_connection.h"
 #include "content/public/common/process_type.h"
 #include "content/public/common/sandbox_type.h"
 #include "content/public/common/sandboxed_process_launcher_delegate.h"
 #include "content/public/common/service_names.h"
-#include "ipc/ipc_switches.h"
 #include "mojo/edk/embedder/embedder.h"
 #include "services/shell/public/cpp/connection.h"
 #include "services/shell/public/cpp/interface_provider.h"
 #include "ui/base/ui_base_switches.h"
 
 #if defined(OS_POSIX) && !defined(OS_ANDROID) && !defined(OS_MACOSX)
 #include "content/public/browser/zygote_handle_linux.h"
 #endif  // defined(OS_POSIX) && !defined(OS_ANDROID) && !defined(OS_MACOSX)
 
 #if defined(OS_WIN)
@@ skipping 204 matching lines @@
 
   process_->SetName(name_);
   process_->GetHost()->CreateChannelMojo();
 
   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(
-            std::string(), BrowserThread::UnsafeGetMessageLoopForThread(
-                            BrowserThread::IO)->task_runner(),
+            BrowserThread::UnsafeGetMessageLoopForThread(BrowserThread::IO)
+                ->task_runner(),
             process_->child_connection()->service_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)
@@ skipping 123 matching lines @@
     base::WeakPtr<UtilityProcessHostImpl> host,
     int error_code) {
   if (!host)
     return;
 
   host->OnProcessLaunchFailed(error_code);
   delete host.get();
 }
 
 }  // namespace content