Revert of Remove calls to MessageLoop::current() in content.

content/child/child_process.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/child/child_process.h"
 
 #include <string.h>
 
 #include "base/lazy_instance.h"
 #include "base/message_loop/message_loop.h"
 #include "base/metrics/statistics_recorder.h"
 #include "base/process/process_handle.h"
-#include "base/single_thread_task_runner.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/threading/thread.h"
 #include "base/threading/thread_local.h"
 #include "build/build_config.h"
 #include "content/child/child_thread_impl.h"
 
 #if defined(OS_ANDROID)
 #include "base/debug/debugger.h"
 #endif
@@ skipping 57 matching lines @@
 ChildThreadImpl* ChildProcess::main_thread() {
   return main_thread_.get();
 }
 
 void ChildProcess::set_main_thread(ChildThreadImpl* thread) {
   main_thread_.reset(thread);
 }
 
 void ChildProcess::AddRefProcess() {
   DCHECK(!main_thread_.get() ||  // null in unittests.
-         main_thread_->message_loop()->task_runner()->BelongsToCurrentThread());
+         base::MessageLoop::current() == main_thread_->message_loop());
   ref_count_++;
 }
 
 void ChildProcess::ReleaseProcess() {
   DCHECK(!main_thread_.get() ||  // null in unittests.
-         main_thread_->message_loop()->task_runner()->BelongsToCurrentThread());
+         base::MessageLoop::current() == main_thread_->message_loop());
   DCHECK(ref_count_);
   if (--ref_count_)
     return;
 
   if (main_thread_)  // null in unittests.
     main_thread_->OnProcessFinalRelease();
 }
 
 ChildProcess* ChildProcess::current() {
   return g_lazy_tls.Pointer()->Get();
@@ skipping 37 matching lines @@
   memset(&sa, 0, sizeof(sa));
   sa.sa_handler = SigUSR1Handler;
   sigaction(SIGUSR1, &sa, NULL);
 
   pause();
 #endif  // defined(OS_ANDROID)
 #endif  // defined(OS_POSIX)
 }
 
 }  // namespace content