components: Remove use of MessageLoopProxy and deprecated MessageLoop APIs

components/scheduler/renderer/webthread_impl_for_renderer_scheduler_unittest.cc

 // Copyright 2015 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/scheduler/renderer/webthread_impl_for_renderer_scheduler.h"
 
+#include "base/location.h"
 #include "base/run_loop.h"
+#include "base/single_thread_task_runner.h"
 #include "components/scheduler/child/scheduler_message_loop_delegate.h"
 #include "components/scheduler/renderer/renderer_scheduler_impl.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/WebKit/public/platform/WebTraceLocation.h"
 
 namespace scheduler {
 namespace {
 
 const int kWorkBatchSize = 2;
@@ skipping 170 matching lines @@
     // A pair for ExitRunLoopTask.
     EXPECT_CALL(observer, willProcessTask());
     EXPECT_CALL(observer, didProcessTask());
 
     // A final callback for EnterRunLoop.
     EXPECT_CALL(observer, didProcessTask());
 
     EatDefaultTask(&observer);
   }
 
-  message_loop_.PostTask(
+  message_loop_.task_runner()->PostTask(
       FROM_HERE, base::Bind(&EnterRunLoop, base::Unretained(&message_loop_),
                             base::Unretained(&thread_)));
   message_loop_.RunUntilIdle();
   thread_.removeTaskObserver(&observer);
 }
 
 }  // namespace scheduler