Remove MessageLoop::current() from base_session_service.cc.

components/sessions/core/base_session_service.cc

 // Copyright 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 "components/sessions/core/base_session_service.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/location.h"
@@ skipping 99 matching lines @@
   *it = new_command.release();
   delete old_command;
 }
 
 void BaseSessionService::ClearPendingCommands() {
   pending_commands_.clear();
 }
 
 void BaseSessionService::StartSaveTimer() {
   // Don't start a timer when testing.
-  if (delegate_->ShouldUseDelayedSave() && base::MessageLoop::current() &&
-      !weak_factory_.HasWeakPtrs()) {
+  if (delegate_->ShouldUseDelayedSave() &&
+      base::ThreadTaskRunnerHandle::IsSet() && !weak_factory_.HasWeakPtrs()) {
     base::ThreadTaskRunnerHandle::Get()->PostDelayedTask(
         FROM_HERE,
         base::Bind(&BaseSessionService::Save, weak_factory_.GetWeakPtr()),
         base::TimeDelta::FromMilliseconds(kSaveDelayMS));
   }
 }
 
 void BaseSessionService::Save() {
   // Inform the delegate that we will save the commands now, giving it the
   // opportunity to append more commands.
@@ skipping 49 matching lines @@
     pool->PostSequencedWorkerTask(sequence_token_, from_here, task);
   } else {
     // Fall back to executing on the main thread if the sequence
     // worker pool has been requested to shutdown (around shutdown
     // time).
     task.Run();
   }
 }
 
 }  // namespace sessions