Initial call for DriveAppRegistry::Update should wait for notification start-up.

chrome/browser/chromeos/drive/drive_integration_service.cc

Index: chrome/browser/chromeos/drive/drive_integration_service.cc
diff --git a/chrome/browser/chromeos/drive/drive_integration_service.cc b/chrome/browser/chromeos/drive/drive_integration_service.cc
index 6ae980a22ea5ebf49c4a1d08c8cc8bf4e4abfd31..1af4edc9e01ddd613deb027c6cc31d29ab91e719 100644
--- a/chrome/browser/chromeos/drive/drive_integration_service.cc
+++ b/chrome/browser/chromeos/drive/drive_integration_service.cc
@@ -252,6 +252,9 @@ void DriveIntegrationService::OnNotificationReceived() {
 }
 
 void DriveIntegrationService::OnPushNotificationEnabled(bool enabled) {
+  if (enabled)
+    drive_app_registry_->Update();
+
   const char* status = (enabled ? "enabled" : "disabled");
   util::Log("Push notification is %s", status);
 }
@@ -368,9 +371,11 @@ void DriveIntegrationService::InitializeAfterMetadataInitialized(
         drive_notification_manager->push_notification_registered();
     const char* status = (registered ? "registered" : "not registered");
     util::Log("Push notification is %s", status);
+
+    if (drive_notification_manager->push_notification_enabled())
+      drive_app_registry_->Update();
   }
 
-  drive_app_registry_->Update();
   AddDriveMountPoint();
 }