arc: Add splash screen for ARC++ Kiosk startup

chrome/browser/chromeos/login/ui/login_display_host_impl.cc

Index: chrome/browser/chromeos/login/ui/login_display_host_impl.cc
diff --git a/chrome/browser/chromeos/login/ui/login_display_host_impl.cc b/chrome/browser/chromeos/login/ui/login_display_host_impl.cc
index d14718a07fa62b1e359f2e849d93c037af3049e2..bb2ecb942062e732fa0ffdc44a365a9c44318134 100644
--- a/chrome/browser/chromeos/login/ui/login_display_host_impl.cc
+++ b/chrome/browser/chromeos/login/ui/login_display_host_impl.cc
@@ -126,6 +126,9 @@ const char kUserAddingURL[] = "chrome://oobe/user-adding";
 // URL which corresponds to the app launch splash WebUI.
 const char kAppLaunchSplashURL[] = "chrome://oobe/app-launch-splash";
 
+// URL which corresponds to the ARC kiosk splash WebUI.
+const char kArcKioskSplashURL[] = "chrome://oobe/arc-kiosk-splash";
+
 // Duration of sign-in transition animation.
 const int kLoginFadeoutTransitionDurationMs = 700;
 
@@ -784,6 +787,25 @@ void LoginDisplayHostImpl::StartAppLaunch(const std::string& app_id,
   app_launch_controller_->StartAppLaunch(auto_launch);
 }
 
+void LoginDisplayHostImpl::StartArcKiosk(const AccountId& account_id) {
+  VLOG(1) << "Login WebUI >> start ARC kiosk.";
+  SetStatusAreaVisible(false);
+
+  // Animation is not supported in Mash.
+  if (!chrome::IsRunningInMash())
+    finalize_animation_type_ = ANIMATION_FADE_OUT;
+  if (!login_window_) {
+    LoadURL(GURL(kAppLaunchSplashURL));
+    LoadURL(GURL(kArcKioskSplashURL));
+  }
+
+  login_view_->set_should_emit_login_prompt_visible(false);
+
+  arc_kiosk_controller_.reset(new ArcKioskController(this, GetOobeUI()));
+
+  arc_kiosk_controller_->StartArcKiosk(account_id);
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // LoginDisplayHostImpl, public