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

content/ppapi_plugin/ppapi_thread.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/ppapi_plugin/ppapi_thread.h"
 
 #include <stddef.h>
 
 #include <limits>
 
 #include "base/command_line.h"
 #include "base/cpu.h"
 #include "base/debug/alias.h"
 #include "base/debug/crash_logging.h"
 #include "base/files/file_util.h"
 #include "base/logging.h"
 #include "base/memory/discardable_memory_allocator.h"
 #include "base/metrics/histogram.h"
 #include "base/metrics/sparse_histogram.h"
 #include "base/rand_util.h"
-#include "base/single_thread_task_runner.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/threading/platform_thread.h"
 #include "base/time/time.h"
 #include "base/trace_event/trace_event.h"
 #include "build/build_config.h"
 #include "content/child/browser_font_resource_trusted.h"
 #include "content/child/child_discardable_shared_memory_manager.h"
 #include "content/child/child_process.h"
 #include "content/common/child_process_messages.h"
@@ skipping 111 matching lines @@
 
   ppapi::proxy::PluginGlobals::Get()->ResetPluginProxyDelegate();
   if (plugin_entry_points_.shutdown_module)
     plugin_entry_points_.shutdown_module();
   blink_platform_impl_->Shutdown();
   blink::Platform::shutdown();
 }
 
 bool PpapiThread::Send(IPC::Message* msg) {
   // Allow access from multiple threads.
-  if (message_loop()->task_runner()->BelongsToCurrentThread())
+  if (base::MessageLoop::current() == message_loop())
     return ChildThreadImpl::Send(msg);
 
   return sync_message_filter()->Send(msg);
 }
 
 // Note that this function is called only for messages from the channel to the
 // browser process. Messages from the renderer process are sent via a different
 // channel that ends up at Dispatcher::OnMessageReceived.
 bool PpapiThread::OnControlMessageReceived(const IPC::Message& msg) {
   bool handled = true;
@@ skipping 424 matching lines @@
           GetHistogramName(is_broker_, "LoadTime", path),
           base::TimeDelta::FromMilliseconds(1),
           base::TimeDelta::FromSeconds(10),
           50,
           base::HistogramBase::kUmaTargetedHistogramFlag);
 
   histogram->AddTime(load_time);
 }
 
 }  // namespace content