Revert of Move file_handlers API from //chrome to //extensions

chrome/browser/chromeos/file_manager/file_tasks.h

 // 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.
 //
 // This file provides utility functions for "file tasks".
 //
 // WHAT ARE FILE TASKS?
 //
 // File tasks are representation of actions that can be performed over the
 // currently selected files from the Files app. A task can be either of:
@@ skipping 99 matching lines @@
 
 #ifndef CHROME_BROWSER_CHROMEOS_FILE_MANAGER_FILE_TASKS_H_
 #define CHROME_BROWSER_CHROMEOS_FILE_MANAGER_FILE_TASKS_H_
 
 #include <memory>
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/callback_forward.h"
+#include "chrome/browser/extensions/api/file_handlers/app_file_handler_util.h"
 #include "chrome/common/extensions/api/file_manager_private.h"
-#include "extensions/browser/api/file_handlers/app_file_handler_util.h"
 #include "url/gurl.h"
 
 class PrefService;
 class Profile;
 
 namespace drive {
 class DriveAppRegistry;
 }
 
 namespace extensions {
@@ skipping 193 matching lines @@
 // task is found (i.e. the default task may not exist in |tasks|). No tasks
 // should be set as default before calling this function.
 void ChooseAndSetDefaultTask(const PrefService& pref_service,
                              const std::vector<extensions::EntryInfo>& entries,
                              std::vector<FullTaskDescriptor>* tasks);
 
 }  // namespace file_tasks
 }  // namespace file_manager
 
 #endif  // CHROME_BROWSER_CHROMEOS_FILE_MANAGER_FILE_TASKS_H_