Remaining cleanup (base::Bind): Replacing FileUtilProxy calls with new callback

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/bind.h"
+#include "base/bind_helpers.h"
 #include "base/base64.h"
 #include "base/file_util.h"
-#include "base/file_util_proxy.h"
 #include "base/json/json_value_serializer.h"
 #include "base/memory/scoped_handle.h"
 #include "base/message_loop.h"
 #include "base/metrics/histogram.h"
 #include "base/path_service.h"
 #include "base/task.h"
 #include "base/utf_string_conversions.h"  // TODO(viettrungluu): delete me.
 #include "crypto/signature_verifier.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/common/chrome_paths.h"
@@ skipping 194 matching lines @@
     if (unpacker.Run() && unpacker.DumpImagesToFile() &&
         unpacker.DumpMessageCatalogsToFile()) {
       OnUnpackExtensionSucceeded(*unpacker.parsed_manifest());
     } else {
       OnUnpackExtensionFailed(unpacker.error_message());
     }
   }
 }
 
 SandboxedExtensionUnpacker::~SandboxedExtensionUnpacker() {
-  base::FileUtilProxy::Delete(
-      BrowserThread::GetMessageLoopProxyForThread(thread_identifier_),
-      temp_dir_.Take(),
-      true,
-      NULL);
+  BrowserThread::GetMessageLoopProxyForThread(thread_identifier_)->PostTask(
+      FROM_HERE,
+      base::IgnoreReturn(base::Callback<bool(void)>(
+          base::Bind(&file_util::Delete, temp_dir_.Take(), true))));
 }
 
 bool SandboxedExtensionUnpacker::OnMessageReceived(
     const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(SandboxedExtensionUnpacker, message)
     IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_UnpackExtension_Succeeded,
                         OnUnpackExtensionSucceeded)
     IPC_MESSAGE_HANDLER(ChromeUtilityHostMsg_UnpackExtension_Failed,
                         OnUnpackExtensionFailed)
@@ skipping 468 matching lines @@
           ERROR_SAVING_CATALOG,
           l10n_util::GetStringFUTF8(
               IDS_EXTENSION_PACKAGE_INSTALL_ERROR,
               ASCIIToUTF16("ERROR_SAVING_CATALOG")));
       return false;
     }
   }
 
   return true;
 }