Add initial code to do filename munging in the FileSystem....

chrome/browser/extensions/sandboxed_extension_unpacker.cc

 // Copyright (c) 2011 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/sandboxed_extension_unpacker.h"
 
 #include <set>
 
 #include "base/base64.h"
 #include "base/crypto/signature_verifier.h"
@@ skipping 113 matching lines @@
     if (unpacker.Run() && unpacker.DumpImagesToFile() &&
         unpacker.DumpMessageCatalogsToFile()) {
       OnUnpackExtensionSucceeded(*unpacker.parsed_manifest());
     } else {
       OnUnpackExtensionFailed(unpacker.error_message());
     }
   }
 }
 
 SandboxedExtensionUnpacker::~SandboxedExtensionUnpacker() {
-  base::FileUtilProxy::Delete(
+  base::FileUtilProxy::GetInstance()->Delete(
       BrowserThread::GetMessageLoopProxyForThread(thread_identifier_),
       temp_dir_.Take(),
       true,
       NULL);
 }
 
 void SandboxedExtensionUnpacker::StartProcessOnIOThread(
     const FilePath& temp_crx_path) {
   UtilityProcessHost* host = new UtilityProcessHost(
       rdh_, this, thread_identifier_);
@@ skipping 366 matching lines @@
       // Error saving catalog.
       ReportFailure(l10n_util::GetStringFUTF8(
           IDS_EXTENSION_PACKAGE_INSTALL_ERROR,
           ASCIIToUTF16("ERROR_SAVING_CATALOG")));
       return false;
     }
   }
 
   return true;
 }