Fix copy & paste error from http://codereview.chromium.org/2855009.

chrome/browser/extensions/crx_installer.cc

 // Copyright (c) 2010 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/crx_installer.h"
 
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
 #include "base/file_util.h"
 #include "base/path_service.h"
@@ skipping 123 matching lines @@
 
   // The unpack dir we don't have to delete explicity since it is a child of
   // the temp dir.
   unpacked_extension_root_ = extension_dir;
 
   // Only allow extensions with a gallery update url to be installed after
   // having been directly downloaded from the gallery.
   if (extension->update_url() == GURL(extension_urls::kGalleryUpdateURL) &&
       !StartsWithASCII(original_url_.spec(),
           extension_urls::kGalleryDownloadPrefix, false)) {
-    ReportFailureFromUIThread(l10n_util::GetStringFUTF8(
+    ReportFailureFromFileThread(l10n_util::GetStringFUTF8(
         IDS_EXTENSION_DISALLOW_NON_DOWNLOADED_GALLERY_INSTALLS,
         l10n_util::GetStringUTF16(IDS_EXTENSION_WEB_STORE_TITLE)));
     return;
   }
 
   // Determine whether to allow installation. We always allow themes and
   // external installs.
   if (!extensions_enabled_ && !extension->is_theme() &&
       !Extension::IsExternalLocation(install_source_)) {
     ReportFailureFromFileThread("Extensions are not enabled.");
@@ skipping 178 matching lines @@
     client_->OnInstallSuccess(extension_.get());
 
   // Tell the frontend about the installation and hand off ownership of
   // extension_ to it.
   frontend_->OnExtensionInstalled(extension_.release(),
                                   allow_privilege_increase_);
 
   // We're done. We don't post any more tasks to ourselves so we are deleted
   // soon.
 }