cros: Fix missing First run UI issue

Bug: 809756
Change-Id: I1a2fed0038ea40c0bae1781ae088f686b3a9e90b
Reviewed-on: https://chromium-review.googlesource.com/959741Reviewed-by: Alexander Alekseev <alemate@chromium.org>
Commit-Queue: Wenzhao (Colin) Zang <wzang@chromium.org>
Cr-Commit-Position: refs/heads/master@{#542714}

chrome/browser/chromeos/first_run/first_run.cc

@@ -140,8 +140,13 @@ class DialogLauncher : public content::NotificationObserver {
       auto* service =
           arc::ArcVoiceInteractionFrameworkService::GetForBrowserContext(
               profile_);
-      if (service)
+      if (service) {
         service->StartVoiceInteractionOobe();
+      } else {
+        // Try launching the tutorial in case the voice interaction framework
+        // service is unavailable. See https://crbug.com/809756.
+        TryLaunchFirstRunDialog(profile_);
+      }
     } else {
       TryLaunchFirstRunDialog(profile_);
     }