Made small refactoring of OobeUI.

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 85c97b1169cf524429c20105a7a201271ef32e33..638cc5c5207c0607d8e69e1edb5495be13773dd2 100644
--- a/chrome/browser/resources/chromeos/login/display_manager.js
+++ b/chrome/browser/resources/chromeos/login/display_manager.js
@@ -53,6 +53,15 @@
   MANAGED_USER_CREATION_FLOW: 'ui-state-locally-managed'
 };
 
+/* Possible types of UI. */
+/** @const */ var DISPLAY_TYPE = {
+  UNKNOWN: 'unknown',
+  OOBE: 'oobe',
+  LOGIN: 'login',
+  LOCK: 'lock',
+  USER_ADDING: 'user-adding'
+};
+
 cr.define('cr.ui.login', function() {
   var Bubble = cr.ui.Bubble;
 
@@ -130,6 +139,20 @@ cr.define('cr.ui.login', function() {
     forceKeyboardFlow_: false,
 
     /**
+     * Type of UI.
+     * @type {string}
+     */
+    displayType_: DISPLAY_TYPE.UNKNOWN,
+
+    get displayType() {
+      return this.displayType_;
+    },
+
+    set displayType(displayType) {
+      this.displayType_ = displayType;
+    },
+
+    /**
      * Gets current screen element.
      * @type {HTMLElement}
      */
@@ -348,8 +371,7 @@ cr.define('cr.ui.login', function() {
         }
       } else {
         // First screen on OOBE launch.
-        if (document.body.classList.contains('oobe-display') &&
-            innerContainer.classList.contains('down')) {
+        if (this.isOobeUI() && innerContainer.classList.contains('down')) {
           innerContainer.classList.remove('down');
           innerContainer.addEventListener(
               'webkitTransitionEnd', function f(e) {
@@ -366,8 +388,8 @@ cr.define('cr.ui.login', function() {
         } else {
           if (defaultControl)
             defaultControl.focus();
+          chrome.send('loginVisible', ['oobe']);
         }
-        newHeader.classList.remove('right');  // Old OOBE.
       }
       this.currentStep_ = nextStepIndex;
       $('oobe').className = nextStepId;
@@ -564,23 +586,7 @@ cr.define('cr.ui.login', function() {
      * Returns true if Oobe UI is shown.
      */
     isOobeUI: function() {
-      return !document.body.classList.contains('login-display');
-    },
-
-    /**
-     * Returns true if the current UI type is the "Sign-in to add user"
-     * (another user session is already active).
-     */
-    isSignInToAddScreen: function() {
-      return document.documentElement.getAttribute('screen') ==
-          'user-adding';
-    },
-
-    /**
-     * Returns true if the current UI type is the lock screen.
-     */
-    isLockScreen: function() {
-      return document.documentElement.getAttribute('screen') == 'lock';
+      return document.body.classList.contains('oobe-display');
     },
 
     /**
@@ -595,16 +601,20 @@ cr.define('cr.ui.login', function() {
    * Initializes display manager.
    */
   DisplayManager.initialize = function() {
-    // Extracting screen type from URL.
-    var hash = window.location.hash;
-    var screenType;
-    if (!hash) {
-      console.error('Screen type not found. Setting default value "login".');
-      screenType = 'login';
-    } else {
-      screenType = hash.substring(1);
+    // Extracting display type from URL.
+    var path = window.location.pathname.substr(1);
+    var displayType = DISPLAY_TYPE.UNKNOWN;
+    Object.getOwnPropertyNames(DISPLAY_TYPE).forEach(function(type) {
+      if (DISPLAY_TYPE[type] == path) {
+        displayType = path;
+      }
+    });
+    if (displayType == DISPLAY_TYPE.UNKNOWN) {
+      console.error("Unknown display type '" + path + "'. Setting default.");
+      displayType = DISPLAY_TYPE.LOGIN;
     }
-    document.documentElement.setAttribute('screen', screenType);
+    Oobe.getInstance().displayType = displayType;
+    document.documentElement.setAttribute('screen', displayType);
 
     var link = $('enterprise-info-hint-link');
     link.addEventListener(