[Part 5 of 6] Move TaskManagerTester to the task_management directory.

chrome/browser/task_manager/legacy_task_manager_tester.h

 // Copyright 2016 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 CHROME_BROWSER_TASK_MANAGER_LEGACY_TASK_MANAGER_TESTER_H_
 #define CHROME_BROWSER_TASK_MANAGER_LEGACY_TASK_MANAGER_TESTER_H_
 
 #include <memory>
 
 #include "base/callback_forward.h"
-#include "chrome/browser/task_manager/task_manager_browsertest_util.h"
+#include "chrome/browser/task_management/task_manager_tester.h"
 
 namespace task_manager {
 
 // Implementation of the TaskManagerTester for the old task manager.
-class LegacyTaskManagerTester : public browsertest_util::TaskManagerTester {
+class LegacyTaskManagerTester : public task_management::TaskManagerTester {

[afakhry, 2016/05/07 00:23:59]

I'll have to wait until I get why you made that extra hierarchy level. :)

[ncarter (slow), 2016/05/07 22:23:08]

Mostly it's me being lazy, and wanting to not have to declare all the methods in
the header, and this let me hide everything except the factory function
LegacyTaskManagerTesterImpl in the cc file.

  public:
   // Create a LegacyTaskManagerTester for the old (deprecated, mac-only) task
   // manager. If you're writing a test, don't use this directly: see
   // GetTaskManagerTester() instead.
   static std::unique_ptr<LegacyTaskManagerTester> Create(
       const base::Closure& callback);
 };
 
 }  // namespace task_manager
 
 #endif  // CHROME_BROWSER_TASK_MANAGER_LEGACY_TASK_MANAGER_TESTER_H_