Move browser-agnostic code from file_system_util to file_system_core_util.

chrome/browser/chromeos/drive/file_system/search_operation.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/drive/file_system/search_operation.h"
 
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/task_runner_util.h"
 #include "chrome/browser/chromeos/drive/change_list_loader.h"
-#include "chrome/browser/chromeos/drive/file_system_util.h"
+#include "chrome/browser/chromeos/drive/file_system_core_util.h"
 #include "chrome/browser/chromeos/drive/job_scheduler.h"
 #include "chrome/browser/chromeos/drive/resource_entry_conversion.h"
 #include "chrome/browser/chromeos/drive/resource_metadata.h"
 #include "chrome/browser/drive/drive_api_util.h"
 #include "google_apis/drive/drive_api_parser.h"
 #include "url/gurl.h"
 
 namespace drive {
 namespace file_system {
 namespace {
@@ skipping 145 matching lines @@
   if (error != FILE_ERROR_OK) {
     callback.Run(error, GURL(), scoped_ptr<std::vector<SearchResultInfo> >());
     return;
   }
 
   callback.Run(error, next_link, result.Pass());
 }
 
 }  // namespace file_system
 }  // namespace drive