Move ReadFileToString to the base namespace.

chrome/utility/importer/bookmark_html_reader.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/utility/importer/bookmark_html_reader.h"
 
 #include "base/callback.h"
 #include "base/file_util.h"
 #include "base/i18n/icu_string_conversions.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 75 matching lines @@
 
 namespace bookmark_html_reader {
 
 void ImportBookmarksFile(
       const base::Callback<bool(void)>& cancellation_callback,
       const base::Callback<bool(const GURL&)>& valid_url_callback,
       const base::FilePath& file_path,
       std::vector<ImportedBookmarkEntry>* bookmarks,
       std::vector<ImportedFaviconUsage>* favicons) {
   std::string content;
-  file_util::ReadFileToString(file_path, &content);
+  base::ReadFileToString(file_path, &content);
   std::vector<std::string> lines;
   base::SplitString(content, '\n', &lines);
 
   base::string16 last_folder;
   bool last_folder_on_toolbar = false;
   bool last_folder_is_empty = true;
   bool has_subfolder = false;
   base::Time last_folder_add_date;
   std::vector<base::string16> path;
   size_t toolbar_folder_index = 0;
@@ skipping 326 matching lines @@
       *url = GURL(value);
     }
   }
 
   return true;
 }
 
 }  // namespace internal
 
 }  // namespace bookmark_html_reader