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

trunk/src/chrome/browser/extensions/extension_protocols.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/extensions/extension_protocols.h"
 
 #include <algorithm>
 
 #include "base/base64.h"
 #include "base/compiler_specific.h"
@@ skipping 146 matching lines @@
   void OnMimeTypeRead(std::string* out_mime_type,
                       std::string* charset,
                       std::string* data,
                       std::string* read_mime_type,
                       const net::CompletionCallback& callback,
                       bool read_result) {
     *out_mime_type = *read_mime_type;
     if (StartsWithASCII(*read_mime_type, "text/", false)) {
       // All of our HTML files should be UTF-8 and for other resource types
       // (like images), charset doesn't matter.
-      DCHECK(base::IsStringUTF8(*data));
+      DCHECK(IsStringUTF8(*data));
       *charset = "utf-8";
     }
     int result = read_result ? net::OK : net::ERR_INVALID_URL;
     callback.Run(result);
   }
 
   // We need the filename of the resource to determine the mime type.
   base::FilePath filename_;
 
   // The resource bundle id to load.
@@ skipping 458 matching lines @@
                                     follow_symlinks_anywhere);
 }
 
 }  // namespace
 
 net::URLRequestJobFactory::ProtocolHandler* CreateExtensionProtocolHandler(
     Profile::ProfileType profile_type,
     extensions::InfoMap* extension_info_map) {
   return new ExtensionProtocolHandler(profile_type, extension_info_map);
 }