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

trunk/src/chrome/common/extensions/extension_file_util.cc

 // Copyright (c) 2013 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/common/extensions/extension_file_util.h"
 
 #include <map>
 #include <vector>
 
 #include "base/file_util.h"
@@ skipping 332 matching lines @@
     base::FilePath basename = extension_path.BaseName();
     // Clean up temporary files left if Chrome crashed or quit in the middle
     // of an extension install.
     if (basename.value() == kTempDirectoryName) {
       if (clean_temp_dir)
         base::DeleteFile(extension_path, true);  // Recursive
       continue;
     }
 
     // Parse directory name as a potential extension ID.
-    if (base::IsStringASCII(basename.value())) {
+    if (IsStringASCII(basename.value())) {
       extension_id = base::UTF16ToASCII(basename.LossyDisplayName());
       if (!Extension::IdIsValid(extension_id))
         extension_id.clear();
     }
 
     // Delete directories that aren't valid IDs.
     if (extension_id.empty()) {
       DLOG(WARNING) << "Invalid extension ID encountered in extensions "
                        "directory: " << basename.value();
       DVLOG(1) << "Deleting invalid extension directory "
@@ skipping 160 matching lines @@
     return base::FilePath();
   }
   return temp_path;
 }
 
 void DeleteFile(const base::FilePath& path, bool recursive) {
   base::DeleteFile(path, recursive);
 }
 
 }  // namespace extension_file_util