Delete CC.

cc/test/test_task_graph_runner.h

-// 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.
-
-#ifndef CC_TEST_TEST_TASK_GRAPH_RUNNER_H_
-#define CC_TEST_TEST_TASK_GRAPH_RUNNER_H_
-
-#include "base/threading/simple_thread.h"
-#include "cc/resources/task_graph_runner.h"
-
-namespace cc {
-
-class TestTaskGraphRunner : public TaskGraphRunner,
-                            public base::DelegateSimpleThread::Delegate {
- public:
-  TestTaskGraphRunner();
-  ~TestTaskGraphRunner() override;
-
-  // Overridden from base::DelegateSimpleThread::Delegate:
-  void Run() override;
-
- private:
-  base::DelegateSimpleThread worker_thread_;
-
-  DISALLOW_COPY_AND_ASSIGN(TestTaskGraphRunner);
-};
-
-}  // namespace cc
-
-#endif  // CC_TEST_TEST_TASK_GRAPH_RUNNER_H_