Add policy that forces SAML users to log in online periodically

chrome/browser/chromeos/login/saml/saml_offline_signin_limiter_factory.cc

Index: chrome/browser/chromeos/login/saml/saml_offline_signin_limiter_factory.cc
diff --git a/chrome/browser/chromeos/login/saml/saml_offline_signin_limiter_factory.cc b/chrome/browser/chromeos/login/saml/saml_offline_signin_limiter_factory.cc
new file mode 100644
index 0000000000000000000000000000000000000000..5cc94073a8074a70b7ea00d8126cf2c4824ad616
--- /dev/null
+++ b/chrome/browser/chromeos/login/saml/saml_offline_signin_limiter_factory.cc
@@ -0,0 +1,52 @@
+// 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/login/saml/saml_offline_signin_limiter_factory.h"
+
+#include "base/time/clock.h"
+#include "chrome/browser/chromeos/login/saml/saml_offline_signin_limiter.h"
+#include "chrome/browser/profiles/profile.h"
+#include "components/browser_context_keyed_service/browser_context_dependency_manager.h"
+#include "components/browser_context_keyed_service/browser_context_keyed_service.h"
+#include "content/public/browser/browser_context.h"
+
+namespace chromeos {
+
+base::Clock* SAMLOfflineSigninLimiterFactory::clock_for_testing_ = NULL;
+
+// static
+SAMLOfflineSigninLimiterFactory*
+    SAMLOfflineSigninLimiterFactory::GetInstance() {
+  return Singleton<SAMLOfflineSigninLimiterFactory>::get();
+}
+
+// static
+SAMLOfflineSigninLimiter* SAMLOfflineSigninLimiterFactory::GetForProfile(
+    Profile* profile) {
+  return static_cast<SAMLOfflineSigninLimiter*>(
+      GetInstance()->GetServiceForBrowserContext(profile, true));
+}
+
+// static
+void SAMLOfflineSigninLimiterFactory::SetClockForTesting(base::Clock* clock) {
+  clock_for_testing_ = clock;
+}
+
+SAMLOfflineSigninLimiterFactory::SAMLOfflineSigninLimiterFactory()
+    : BrowserContextKeyedServiceFactory(
+          "SAMLOfflineSigninLimiter",
+          BrowserContextDependencyManager::GetInstance()) {
+}
+
+SAMLOfflineSigninLimiterFactory::~SAMLOfflineSigninLimiterFactory() {
+}
+
+BrowserContextKeyedService*
+    SAMLOfflineSigninLimiterFactory::BuildServiceInstanceFor(
+        content::BrowserContext* context) const {
+  return new SAMLOfflineSigninLimiter(static_cast<Profile*>(context),
+                                      clock_for_testing_);
+}
+
+}  // namespace chromeos