Fix a bug where extensions created with locale info from the command line is broken.

chrome/browser/extensions/startup_helper.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/startup_helper.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/message_loop.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/webstore_standalone_installer.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/chrome_switches.h"
+#include "chrome/common/extensions/api/i18n/default_locale_handler.h"
 #include "chrome/common/extensions/extension.h"
+#include "chrome/common/extensions/extension_manifest_constants.h"
+#include "chrome/common/extensions/manifest_handler.h"
 #include "content/public/browser/web_contents.h"
 #include "ipc/ipc_message.h"
 
 namespace {
 
 void PrintPackExtensionMessage(const std::string& message) {
   printf("%s\n", message.c_str());
 }
 
 }  // namespace
 
 namespace extensions {
 
-StartupHelper::StartupHelper() : pack_job_succeeded_(false) {}
+StartupHelper::StartupHelper() : pack_job_succeeded_(false) {
+  ManifestHandler::Register(extension_manifest_keys::kDefaultLocale,
+                            make_linked_ptr(new DefaultLocaleHandler));
+}
 
 void StartupHelper::OnPackSuccess(
     const base::FilePath& crx_path,
     const base::FilePath& output_private_key_path) {
   pack_job_succeeded_ = true;
   PrintPackExtensionMessage(
       UTF16ToUTF8(
           PackExtensionJob::StandardSuccessMessage(crx_path,
                                                    output_private_key_path)));
 }
@@ skipping 113 matching lines @@
     LOG(ERROR) << "InstallFromWebstore failed with error: " << helper.error();
   return helper.success();
 }
 
 StartupHelper::~StartupHelper() {
   if (pack_job_.get())
     pack_job_->ClearClient();
 }
 
 }  // namespace extensions