Revert 257524 "Move IsStringASCII/UTF8 to base namespace."

trunk/src/chrome/browser/bookmarks/bookmark_codec.cc

 // Copyright (c) 2012 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/bookmarks/bookmark_codec.h"
 
 #include <algorithm>
 
 #include "base/json/json_string_value_serializer.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 446 matching lines @@
 void BookmarkCodec::UpdateChecksum(const base::string16& str) {
   base::MD5Update(&md5_context_,
                   base::StringPiece(
                       reinterpret_cast<const char*>(str.data()),
                       str.length() * sizeof(str[0])));
 }
 
 void BookmarkCodec::UpdateChecksumWithUrlNode(const std::string& id,
                                               const base::string16& title,
                                               const std::string& url) {
-  DCHECK(base::IsStringUTF8(url));
+  DCHECK(IsStringUTF8(url));
   UpdateChecksum(id);
   UpdateChecksum(title);
   UpdateChecksum(kTypeURL);
   UpdateChecksum(url);
 }
 
 void BookmarkCodec::UpdateChecksumWithFolderNode(const std::string& id,
                                                  const base::string16& title) {
   UpdateChecksum(id);
   UpdateChecksum(title);
   UpdateChecksum(kTypeFolder);
 }
 
 void BookmarkCodec::InitializeChecksum() {
   base::MD5Init(&md5_context_);
 }
 
 void BookmarkCodec::FinalizeChecksum() {
   base::MD5Digest digest;
   base::MD5Final(&digest, &md5_context_);
   computed_checksum_ = base::MD5DigestToBase16(digest);
 }