Add more string_util functions to base namespace.

chrome/browser/ui/pdf/adobe_reader_info_win.cc

 // 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.
 
 #include "chrome/browser/ui/pdf/adobe_reader_info_win.h"
 
 #include <shlwapi.h>
 
 #include <algorithm>
 #include <vector>
@@ skipping 162 matching lines @@
       FileVersionInfo::CreateFileVersionInfo(install_path));
   if (!file_version_info)
     return false;
 
   std::string reader_version =
       base::UTF16ToUTF8(file_version_info->product_version());
   // Convert 1.2.03.45 to 1.2.3.45 so base::Version considers it as valid.
   for (int i = 1; i <= 9; ++i) {
     std::string from = base::StringPrintf(".0%d", i);
     std::string to = base::StringPrintf(".%d", i);
-    ReplaceSubstringsAfterOffset(&reader_version, 0, from, to);
+    base::ReplaceSubstringsAfterOffset(&reader_version, 0, from, to);
   }
   base::Version file_version(reader_version);
   return file_version.IsValid() && !file_version.IsOlderThan(kSecureVersion);
 }