Refactor kiosk app launch to be part of login screen UI flow.

chrome/browser/resources/chromeos/login/display_manager.js

Index: chrome/browser/resources/chromeos/login/display_manager.js
diff --git a/chrome/browser/resources/chromeos/login/display_manager.js b/chrome/browser/resources/chromeos/login/display_manager.js
index 638cc5c5207c0607d8e69e1edb5495be13773dd2..a854f28790d1714abb76c9d52b11050d590bf200 100644
--- a/chrome/browser/resources/chromeos/login/display_manager.js
+++ b/chrome/browser/resources/chromeos/login/display_manager.js
@@ -20,6 +20,7 @@
 /** @const */ var SCREEN_PASSWORD_CHANGED = 'password-changed';
 /** @const */ var SCREEN_CREATE_MANAGED_USER_FLOW =
     'managed-user-creation';
+/** @const */ var SCREEN_APP_LAUNCH_SPLASH = 'app-launch-splash';
 
 /* Accelerator identifiers. Must be kept in sync with webui_login_view.cc. */
 /** @const */ var ACCELERATOR_CANCEL = 'cancel';
@@ -32,6 +33,7 @@
 /** @const */ var ACCELERATOR_DEVICE_REQUISITION = 'device_requisition';
 /** @const */ var ACCELERATOR_DEVICE_REQUISITION_REMORA =
     'device_requisition_remora';
+/** @const */ var ACCELERATOR_APP_LAUNCH_BAILOUT = 'app_launch_bailout';
 
 /* Help topic identifiers. */
 /** @const */ var HELP_TOPIC_ENTERPRISE_REPORTING = 2535613;
@@ -235,6 +237,10 @@ cr.define('cr.ui.login', function() {
           this.deviceRequisition_ = 'remora';
           this.showDeviceRequisitionPrompt_();
         }
+      } else if (name == ACCELERATOR_APP_LAUNCH_BAILOUT) {
+        var currentStepId = this.screens_[this.currentStep_];
+        if (currentStepId == SCREEN_APP_LAUNCH_SPLASH)
+          chrome.send('cancelAppLaunch');
       }
 
       if (!this.forceKeyboardFlow_)
@@ -484,6 +490,11 @@ cr.define('cr.ui.login', function() {
      * @param {!HTMLElement} screen Screen that is being shown.
      */
     updateScreenSize: function(screen) {
+      if (screen.classList.contains('fullscreen')) {
+        $('outer-container').classList.toggle('fullscreen', true);
+        return;
+      }

[xiyuan, 2013/08/19 17:40:29]

nit: Although we don't have code to return from a 'fullsreen' screen yet, but
it's good to have code after this "if" to clear 'fullscreen' just in case.

[Tim Song, 2013/08/19 20:05:07]

Done. The #('inner-container').style is being set below, and we also need to
clear these custom styles for the fullscreen styles to be applied.

+
       // Have to reset any previously predefined screen size first
       // so that screen contents would define it instead (offsetHeight/width).
       // http://crbug.com/146539