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

trunk/src/chrome/browser/bookmarks/bookmark_html_writer.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_html_writer.h"
 
 #include "base/base64.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
@@ skipping 189 matching lines @@
       return true;
     size_t wrote = file_stream_->WriteSync(text.c_str(), text.length());
     bool result = (wrote == text.length());
     DCHECK(result);
     return result;
   }
 
   // Writes out the text string (as UTF8). The text is escaped based on
   // type.
   bool Write(const std::string& text, TextType type) {
-    DCHECK(base::IsStringUTF8(text));
+    DCHECK(IsStringUTF8(text));
     std::string utf8_string;
 
     switch (type) {
       case ATTRIBUTE_VALUE:
         // Convert " to "
         utf8_string = text;
         ReplaceSubstringsAfterOffset(&utf8_string, 0, "\"", """);
         break;
 
       case CONTENT:
@@ skipping 280 matching lines @@
   // BookmarkModel isn't thread safe (nor would we want to lock it down
   // for the duration of the write), as such we make a copy of the
   // BookmarkModel using BookmarkCodec then write from that.
   if (fetcher == NULL) {
     fetcher = new BookmarkFaviconFetcher(profile, path, observer);
     fetcher->ExportBookmarks();
   }
 }
 
 }  // namespace bookmark_html_writer