Explicitly wait for user policy before completing login.

chrome/browser/policy/browser_policy_connector.cc

Index: chrome/browser/policy/browser_policy_connector.cc
diff --git a/chrome/browser/policy/browser_policy_connector.cc b/chrome/browser/policy/browser_policy_connector.cc
index bb6a250db4c839c50a669977cfc864ef7c5ac106..3489dda25eeada6171ca054371d7aa7d54dadab8 100644
--- a/chrome/browser/policy/browser_policy_connector.cc
+++ b/chrome/browser/policy/browser_policy_connector.cc
@@ -258,7 +258,8 @@ void BrowserPolicyConnector::ScheduleServiceInitialization(
 }
 void BrowserPolicyConnector::InitializeUserPolicy(
     const std::string& user_name,
-    bool wait_for_policy_fetch) {
+    bool wait_for_policy_fetch,
+    const base::Closure& callback) {
   // Throw away the old backend.
   user_cloud_policy_subsystem_.reset();
   user_policy_token_cache_.reset();
@@ -280,7 +281,8 @@ void BrowserPolicyConnector::InitializeUserPolicy(
 
     UserPolicyCache* user_policy_cache =
         new UserPolicyCache(policy_cache_dir.Append(kPolicyCacheFile),
-                            wait_for_policy_fetch);
+                            wait_for_policy_fetch,
+                            callback);
     user_data_store_.reset(CloudPolicyDataStore::CreateForUserPolicies());
     user_policy_token_cache_.reset(
         new UserPolicyTokenCache(user_data_store_.get(),