Clean up error handling and timestamp initialization for cloud policy.

BUG=chromium-os:23685
TEST=See bug.


Review URL: http://codereview.chromium.org/8773034

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@112687 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/policy/cloud_policy_controller.cc

@@ -139,19 +139,19 @@ void CloudPolicyController::OnError(DeviceManagementBackend::ErrorCode code) {
                    << "device manager, re-registering device.";
       // Will retry fetching a token but gracefully backing off.
       SetState(STATE_TOKEN_ERROR);
-      break;
+      return;
     }
     case DeviceManagementBackend::kErrorServiceInvalidSerialNumber: {
       VLOG(1) << "The device is no longer enlisted for the domain.";
       token_fetcher_->SetSerialNumberInvalidState();
       SetState(STATE_TOKEN_ERROR);
-      break;
+      return;
     }
     case DeviceManagementBackend::kErrorServiceManagementNotSupported: {
       VLOG(1) << "The device is no longer managed.";
       token_fetcher_->SetUnmanagedState();
       SetState(STATE_TOKEN_UNMANAGED);
-      break;
+      return;
     }
     case DeviceManagementBackend::kErrorServicePolicyNotFound:
     case DeviceManagementBackend::kErrorRequestInvalid:
@@ -161,17 +161,20 @@ void CloudPolicyController::OnError(DeviceManagementBackend::ErrorCode code) {
       VLOG(1) << "An error in the communication with the policy server occurred"
               << ", will retry in a few hours.";
       SetState(STATE_POLICY_UNAVAILABLE);
-      break;
+      return;
     }
     case DeviceManagementBackend::kErrorRequestFailed:
     case DeviceManagementBackend::kErrorTemporaryUnavailable: {
       VLOG(1) << "A temporary error in the communication with the policy server"
               << " occurred.";
-    }
-    default:
       // Will retry last operation but gracefully backing off.
       SetState(STATE_POLICY_ERROR);
+      return;
     }
+  }
+
+  NOTREACHED();
+  SetState(STATE_POLICY_ERROR);
 }
 
 void CloudPolicyController::OnDeviceTokenChanged() {

chrome/browser/policy/device_policy_cache.cc

@@ -303,7 +303,9 @@ void DevicePolicyCache::InstallInitialPolicy(
   data_store_->set_user_name(policy_data.username());
   data_store_->set_device_id(policy_data.device_id());
   *device_token = policy_data.request_token();
-  SetPolicyInternal(policy, NULL, false);
+  base::Time timestamp;
+  if (SetPolicyInternal(policy, &timestamp, true))
+    set_last_policy_refresh_time(timestamp);
 }
 
 // static

chrome/browser/policy/device_token_fetcher.cc

@@ -119,24 +119,31 @@ void DeviceTokenFetcher::OnError(DeviceManagementBackend::ErrorCode code) {
   switch (code) {
     case DeviceManagementBackend::kErrorServiceManagementNotSupported:
       SetUnmanagedState();
-      break;
+      return;
     case DeviceManagementBackend::kErrorRequestFailed:
     case DeviceManagementBackend::kErrorTemporaryUnavailable:
     case DeviceManagementBackend::kErrorServiceDeviceNotFound:
     case DeviceManagementBackend::kErrorServiceDeviceIdConflict:
       SetState(STATE_TEMPORARY_ERROR);
-      break;
+      return;
     case DeviceManagementBackend::kErrorServiceManagementTokenInvalid:
       // Most probably the GAIA auth cookie has expired. We can not do anything
       // until the user logs-in again.
       SetState(STATE_BAD_AUTH);
-      break;
+      return;
     case DeviceManagementBackend::kErrorServiceInvalidSerialNumber:
       SetSerialNumberInvalidState();
-      break;
-    default:
+      return;
+    case DeviceManagementBackend::kErrorRequestInvalid:
+    case DeviceManagementBackend::kErrorHttpStatus:
+    case DeviceManagementBackend::kErrorResponseDecoding:
+    case DeviceManagementBackend::kErrorServiceActivationPending:
+    case DeviceManagementBackend::kErrorServicePolicyNotFound:
       SetState(STATE_ERROR);
+      return;
   }
+  NOTREACHED();
+  SetState(STATE_ERROR);
 }
 
 void DeviceTokenFetcher::Initialize(DeviceManagementService* service,