Replace MessageLoop::current()->task_runner() with ThreadTaskRunnerHandle::Get().

ash/shelf/shelf_view_unittest.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 "ash/common/shelf/shelf_view.h"
 
 #include <algorithm>
 #include <memory>
 #include <utility>
 #include <vector>
@@ skipping 2606 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(TestOverflowButtonShellDelegate);
 };
 
 // A scoped wrapper around TestMockTimeTaskRunner that replaces message loop's
 // task runner with a TestMockTimeTaskRunner and resets it back at the end of
 // the scope.
 class ScopedMockTaskRunnerWrapper {
  public:
   ScopedMockTaskRunnerWrapper() {
     mock_task_runner_ = new base::TestMockTimeTaskRunner;
-    previous_task_runner_ = base::MessageLoop::current()->task_runner();
+    previous_task_runner_ = base::ThreadTaskRunnerHandle::Get();
     base::MessageLoop::current()->SetTaskRunner(mock_task_runner_);
   }
 
   ~ScopedMockTaskRunnerWrapper() {
-    DCHECK_EQ(mock_task_runner_, base::MessageLoop::current()->task_runner());
+    DCHECK_EQ(mock_task_runner_, base::ThreadTaskRunnerHandle::Get());
     mock_task_runner_->ClearPendingTasks();
     base::MessageLoop::current()->SetTaskRunner(previous_task_runner_);
   }
 
   void FastForwardUntilNoTasksRemain() {
     mock_task_runner_->FastForwardUntilNoTasksRemain();
   }
 
  private:
   scoped_refptr<base::TestMockTimeTaskRunner> mock_task_runner_;
@@ skipping 528 matching lines @@
                 IsEmpty());
 
     ASSERT_TRUE(test_api_->IsShowingOverflowBubble());
   }
 }
 
 #endif  // !defined(OS_WIN)
 
 }  // namespace test
 }  // namespace ash