[Kiosk] Make profile load log more visible

There are some flaky test failures fixing of which that would benefit
of having profile loading log line visible.

Bug: 1015383
Change-Id: I4a9703411cdd19b89ca095f2625aa1ae05fba732
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2391060
Auto-Submit: Anatoliy Potapchuk <apotapchuk@chromium.org>
Reviewed-by: Anqing Zhao <anqing@chromium.org>
Commit-Queue: Anatoliy Potapchuk <apotapchuk@chromium.org>
Cr-Commit-Position: refs/heads/master@{#803964}

chrome/browser/chromeos/login/app_mode/kiosk_launch_controller.cc

@@ -163,7 +163,7 @@ void KioskLaunchController::Start(const KioskAppId& kiosk_app_id,
 }
 
 void KioskLaunchController::OnProfileLoaded(Profile* profile) {
-  DVLOG(1) << "Profile loaded... Starting app launch.";
+  SYSLOG(INFO) << "Profile loaded... Starting app launch.";
   profile_ = profile;
 
   // This is needed to trigger input method extensions being loaded.