This will cause build failed since a include file does not exist.

chrome/browser/task_manager/task_manager_browsertest_util.cc

-// Copyright (c) 2011 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 "base/message_loop.h"
-#include "chrome/browser/browser_process.h"
-#include "chrome/browser/profiles/profile.h"
-#include "chrome/browser/task_manager/task_manager.h"
-#include "chrome/browser/task_manager/task_manager_browsertest_util.h"
-#include "chrome/browser/ui/browser.h"
-#include "chrome/browser/ui/browser_window.h"
-#include "chrome/common/chrome_notification_types.h"
-#include "chrome/test/base/ui_test_utils.h"
-#include "content/common/notification_source.h"
-
-namespace {
-
-class ResourceChangeObserver : public TaskManagerModelObserver {
- public:
-  ResourceChangeObserver(const TaskManagerModel* model,
-                         int target_resource_count)
-      : model_(model),
-        target_resource_count_(target_resource_count) {
-  }
-
-  virtual void OnModelChanged() OVERRIDE {
-    OnResourceChange();
-  }
-
-  virtual void OnItemsChanged(int start, int length) OVERRIDE {
-    OnResourceChange();
-  }
-
-  virtual void OnItemsAdded(int start, int length) OVERRIDE {
-    OnResourceChange();
-  }
-
-  virtual void OnItemsRemoved(int start, int length) OVERRIDE {
-    OnResourceChange();
-  }
-
- private:
-  void OnResourceChange() {
-    if (model_->ResourceCount() == target_resource_count_)
-      MessageLoopForUI::current()->Quit();
-  }
-
-  const TaskManagerModel* model_;
-  const int target_resource_count_;
-};
-
-}  // namespace
-
-// static
-void TaskManagerBrowserTestUtil::WaitForResourceChange(int target_count) {
-  TaskManagerModel* model = TaskManager::GetInstance()->model();
-
-  if (model->ResourceCount() == target_count)
-    return;
-  ResourceChangeObserver observer(model, target_count);
-  model->AddObserver(&observer);
-  ui_test_utils::RunMessageLoop();
-  model->RemoveObserver(&observer);
-}
-
-// static
-void TaskManagerBrowserTestUtil::ShowTaskManagerAndWaitForReady(
-    Browser* browser) {
-#if defined(WEBUI_TASK_MANAGER)
-  ui_test_utils::WindowedNotificationObserver observer(
-      chrome::NOTIFICATION_TASK_MANAGER_WINDOW_READY,
-      Source<TaskManagerModel>(TaskManager::GetInstance()->model()));
-  browser->window()->ShowTaskManager();
-  observer.Wait();
-#else
-  browser->window()->ShowTaskManager();
-#endif  // defined(WEBUI_TASK_MANAGER)
-}
-