Remove remaining calls to deprecated MessageLoop methods.

ipc/ipc_sync_channel.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 "ipc/ipc_sync_channel.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/lazy_instance.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
+#include "base/run_loop.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/synchronization/waitable_event_watcher.h"
 #include "base/threading/thread_local.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/trace_event/trace_event.h"
 #include "ipc/ipc_channel_factory.h"
 #include "ipc/ipc_logging.h"
 #include "ipc/ipc_message_macros.h"
 #include "ipc/ipc_sync_message.h"
 
@@ skipping 532 matching lines @@
   }
 
   sync_msg_queue->set_top_send_done_watcher(&send_done_watcher);
 
   send_done_watcher.StartWatching(context->GetSendDoneEvent(),
                                   context->MakeWaitableEventCallback());
 
   {
     base::MessageLoop::ScopedNestableTaskAllower allow(
         base::MessageLoop::current());
-    base::MessageLoop::current()->Run();
+    base::RunLoop().Run();
   }
 
   sync_msg_queue->set_top_send_done_watcher(old_send_done_event_watcher);
   if (old_send_done_event_watcher && old_event) {
     old_send_done_event_watcher->StartWatching(old_event, old_callback);
   }
 }
 
 void SyncChannel::OnWaitableEventSignaled(WaitableEvent* event) {
   DCHECK(event == sync_context()->GetDispatchEvent());
@@ skipping 20 matching lines @@
 
 void SyncChannel::OnChannelInit() {
   for (const auto& filter : pre_init_sync_message_filters_) {
     filter->set_is_channel_send_thread_safe(
         context()->IsChannelSendThreadSafe());
   }
   pre_init_sync_message_filters_.clear();
 }
 
 }  // namespace IPC