base/version: remove wstring version

base/version.cc

 // Copyright (c) 2010 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 "base/version.h"
 
 #include "base/logging.h"
 #include "base/string_number_conversions.h"
 #include "base/string_split.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 
 // static
-Version* Version::GetVersionFromString(const std::wstring& version_str) {
-  if (!IsStringASCII(version_str))
-    return NULL;
-  return GetVersionFromString(WideToUTF8(version_str));
-}
-
-// static
 Version* Version::GetVersionFromString(const std::string& version_str) {
   Version* vers = new Version();
   if (vers->InitFromString(version_str)) {
     DCHECK(vers->is_valid_);
     return vers;
   }
   delete vers;
   return NULL;
 }
 
@@ skipping 59 matching lines @@
       return false;
     // This throws out things like +3, or 032.
     if (base::IntToString(num) != *i)
       return false;
     uint16 component = static_cast<uint16>(num);
     components_.push_back(component);
   }
   is_valid_ = true;
   return true;
 }