Add DeviceADPolicyManager to provide AD policy.

chrome/browser/policy/profile_policy_connector_factory.cc

Index: chrome/browser/policy/profile_policy_connector_factory.cc
diff --git a/chrome/browser/policy/profile_policy_connector_factory.cc b/chrome/browser/policy/profile_policy_connector_factory.cc
index a992459ddc09e029047967c6a8eab2a8682528e2..4b836952e3d96050c6bf13fddb5fc2084ab78ffe 100644
--- a/chrome/browser/policy/profile_policy_connector_factory.cc
+++ b/chrome/browser/policy/profile_policy_connector_factory.cc
@@ -110,12 +110,15 @@ ProfilePolicyConnectorFactory::CreateForBrowserContextInternal(
   Profile* const profile = Profile::FromBrowserContext(context);
   const user_manager::User* user = nullptr;
   if (chromeos::ProfileHelper::IsSigninProfile(profile)) {
-    policy::BrowserPolicyConnectorChromeOS* browser_policy_connector =
-        g_browser_process->platform_part()->browser_policy_connector_chromeos();
     policy::DeviceCloudPolicyManagerChromeOS* device_cloud_policy_manager =
-        browser_policy_connector->GetDeviceCloudPolicyManager();
-    device_cloud_policy_manager->SetSigninProfileSchemaRegistry(
-        schema_registry);
+        g_browser_process->platform_part()
+            ->browser_policy_connector_chromeos()
+            ->GetDeviceCloudPolicyManager();
+    // TODO(tnagel): Do we need to do something for Active Directory management?

[emaxx, 2016/11/17 01:14:32]

This piece was solely for supporting cloud policy for login screen apps.
So, unless there are potential plans for supporting login screen apps managed by
Active Directory, this TODO may be omitted.

+    if (device_cloud_policy_manager) {
+      device_cloud_policy_manager->SetSigninProfileSchemaRegistry(
+          schema_registry);
+    }
   } else {
     user = chromeos::ProfileHelper::Get()->GetUserByProfile(profile);
     CHECK(user);