Automated IWYU fix for TaskRunner includes.

extensions/browser/api/power/power_api.h

 // Copyright 2014 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 EXTENSIONS_BROWSER_API_POWER_POWER_API_H_
 #define EXTENSIONS_BROWSER_API_POWER_POWER_API_H_
 
 #include <map>
 #include <memory>
 #include <string>
 
 #include "base/callback.h"
 #include "base/macros.h"
+#include "base/single_thread_task_runner.h"
 #include "device/power_save_blocker/power_save_blocker.h"
 #include "extensions/browser/browser_context_keyed_api_factory.h"
 #include "extensions/browser/extension_function.h"
 #include "extensions/browser/extension_registry_observer.h"
 #include "extensions/common/api/power.h"
 
 namespace content {
 class BrowserContext;
 }
 
@@ skipping 98 matching lines @@
 
   // Outstanding requests.
   ExtensionLevelMap extension_levels_;
 
   DISALLOW_COPY_AND_ASSIGN(PowerAPI);
 };
 
 }  // namespace extensions
 
 #endif  // EXTENSIONS_BROWSER_API_POWER_POWER_API_H_