Install and launch kiosk app from cached crx file at start up.

chrome/browser/chromeos/app_mode/kiosk_app_external_loader.cc

Index: chrome/browser/chromeos/app_mode/kiosk_app_external_loader.cc
diff --git a/chrome/browser/chromeos/app_mode/kiosk_app_external_loader.cc b/chrome/browser/chromeos/app_mode/kiosk_app_external_loader.cc
new file mode 100644
index 0000000000000000000000000000000000000000..0fefc06afdb31e7cc6675c0d617a2708e8eb0217
--- /dev/null
+++ b/chrome/browser/chromeos/app_mode/kiosk_app_external_loader.cc
@@ -0,0 +1,28 @@
+// Copyright 2014 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/chromeos/app_mode/kiosk_app_external_loader.h"
+
+#include "chrome/browser/chromeos/app_mode/kiosk_app_manager.h"
+
+namespace chromeos {
+
+KioskAppExternalLoader::KioskAppExternalLoader() {
+}
+
+KioskAppExternalLoader::~KioskAppExternalLoader() {
+}
+
+void KioskAppExternalLoader::SetCurrentAppExtensions(
+    scoped_ptr<base::DictionaryValue> prefs) {
+  kiosk_apps_.Swap(prefs.get());
+  StartLoading();
+}
+
+void KioskAppExternalLoader::StartLoading() {
+  prefs_.reset(kiosk_apps_.DeepCopy());
+  LoadFinished();
+}
+
+}  // namespace chromeos