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

chrome/browser/chromeos/extensions/file_manager/private_api_tasks.cc

 // Copyright 2013 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 "chrome/browser/chromeos/extensions/file_manager/private_api_tasks.h"
 
 #include <stddef.h>
 
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/memory/ptr_util.h"
 #include "chrome/browser/chromeos/drive/file_system_util.h"
 #include "chrome/browser/chromeos/file_manager/fileapi_util.h"
 #include "chrome/browser/chromeos/fileapi/file_system_backend.h"
+#include "chrome/browser/extensions/api/file_handlers/directory_util.h"
+#include "chrome/browser/extensions/api/file_handlers/mime_util.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/extensions/api/file_manager_private.h"
 #include "chrome/common/extensions/api/file_manager_private_internal.h"
 #include "content/public/browser/browser_thread.h"
-#include "extensions/browser/api/file_handlers/directory_util.h"
-#include "extensions/browser/api/file_handlers/mime_util.h"
 #include "extensions/browser/entry_info.h"
 #include "net/base/filename_util.h"
 #include "storage/browser/fileapi/file_system_context.h"
 #include "storage/browser/fileapi/file_system_url.h"
 
 using content::BrowserThread;
 using storage::FileSystemURL;
 
 namespace extensions {
 namespace {
@@ skipping 209 matching lines @@
     return RespondNow(
         OneArgument(base::MakeUnique<base::FundamentalValue>(true)));
   }
 
   file_manager::file_tasks::UpdateDefaultTask(
       profile->GetPrefs(), params->task_id, suffixes, mime_types);
   return RespondNow(NoArguments());
 }
 
 }  // namespace extensions