Re-enabled UserCloudPolicyManagerChromeOS unit tests

chrome/browser/chromeos/policy/user_cloud_policy_manager_chromeos.cc

Index: chrome/browser/chromeos/policy/user_cloud_policy_manager_chromeos.cc
diff --git a/chrome/browser/chromeos/policy/user_cloud_policy_manager_chromeos.cc b/chrome/browser/chromeos/policy/user_cloud_policy_manager_chromeos.cc
index df022e079ba55af148393bb888d37c1922c71e2e..375a2722ad5e747b00f884b0c7db4a3d626c9ae9 100644
--- a/chrome/browser/chromeos/policy/user_cloud_policy_manager_chromeos.cc
+++ b/chrome/browser/chromeos/policy/user_cloud_policy_manager_chromeos.cc
@@ -118,6 +118,14 @@ UserCloudPolicyManagerChromeOS::UserCloudPolicyManagerChromeOS(
   }
 }
 
+void UserCloudPolicyManagerChromeOS::ForceTimeoutForTest() {
+  DCHECK(policy_fetch_timeout_.IsRunning());
+  // Stop the timer to mimic what happens when a real timer fires, then invoke
+  // the timer callback directly.
+  policy_fetch_timeout_.Stop();
+  OnBlockingFetchTimeout();
+}
+
 UserCloudPolicyManagerChromeOS::~UserCloudPolicyManagerChromeOS() {}
 
 void UserCloudPolicyManagerChromeOS::Connect(
@@ -303,6 +311,7 @@ void UserCloudPolicyManagerChromeOS::OnStoreLoaded(
   em::PolicyData const* const policy_data = cloud_policy_store->policy();
 
   if (policy_data) {
+    DCHECK(policy_data->has_username());
     chromeos::AffiliationIDSet set_of_user_affiliation_ids(
         policy_data->user_affiliation_ids().begin(),
         policy_data->user_affiliation_ids().end());