Make invalidations work for Chrome OS Kiosk Apps.

chrome/browser/invalidation/device_invalidation_auth_provider_chromeos.cc

+// Copyright (c) 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/invalidation/device_invalidation_auth_provider_chromeos.h"
+
+#include "chrome/browser/chromeos/settings/device_oauth2_token_service.h"
+
+namespace invalidation {
+
+DeviceInvalidationAuthProvider::DeviceInvalidationAuthProvider(
+    chromeos::DeviceOAuth2TokenService* token_service)
+    : token_service_(token_service) {}
+
+DeviceInvalidationAuthProvider::~DeviceInvalidationAuthProvider() {}
+
+std::string DeviceInvalidationAuthProvider::GetAccountId() {
+  return token_service_->GetRobotAccountId();
+}
+
+OAuth2TokenService* DeviceInvalidationAuthProvider::GetTokenService() {
+  return token_service_;
+}
+
+bool DeviceInvalidationAuthProvider::ShowLoginUI() { return false; }
+
+}  // namespace invalidation