Chromad: Add authentication flow

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

Index: chrome/browser/resources/chromeos/login/screen_gaia_signin.js
diff --git a/chrome/browser/resources/chromeos/login/screen_gaia_signin.js b/chrome/browser/resources/chromeos/login/screen_gaia_signin.js
index 26376a71520fb37c331ad69cabf4d40b79b533d7..cc35df7c29076d2445e9c1c2e687e56aba8584a6 100644
--- a/chrome/browser/resources/chromeos/login/screen_gaia_signin.js
+++ b/chrome/browser/resources/chromeos/login/screen_gaia_signin.js
@@ -39,7 +39,8 @@ login.createScreen('GaiaSigninScreen', 'gaia-signin', function() {
   var ScreenMode = {
     DEFAULT: 0,           // Default GAIA login flow.
     OFFLINE: 1,           // GAIA offline login.
-    SAML_INTERSTITIAL: 2  // Interstitial page before SAML redirection.
+    SAML_INTERSTITIAL: 2, // Interstitial page before SAML redirection.
+    AD_AUTH: 3            // Offline Active Directory login flow.
   };
 
   return {
@@ -193,12 +194,25 @@ login.createScreen('GaiaSigninScreen', 'gaia-signin', function() {
           'ready', this.onAuthReady_.bind(this));
 
       var that = this;
-      [this.gaiaAuthHost_, $('offline-gaia')].forEach(function(frame) {
+      [this.gaiaAuthHost_, $('offline-gaia'), $('offline-ad-auth')].
+          forEach(function(frame) {
         // Ignore events from currently inactive frame.
         var frameFilter = function(callback) {
           return function(e) {
-            var isEventOffline = frame === $('offline-gaia');
-            if (isEventOffline === that.isOffline())
+            var currentFrame = null;
+            switch (that.screenMode_) {
+              case ScreenMode.DEFAULT:
+              case ScreenMode.SAML_INTERSTITIAL:
+                currentFrame = that.gaiaAuthHost_;
+                break;
+              case ScreenMode.OFFLINE:
+                currentFrame = $('offline-gaia');
+                break;
+              case ScreenMode.AD_AUTH:
+                currentFrame = $('offline-ad-auth');
+                break;
+            }
+            if (frame === currentFrame)
               callback.call(that, e);
           };
         };
@@ -314,16 +328,25 @@ login.createScreen('GaiaSigninScreen', 'gaia-signin', function() {
           $('signin-frame').hidden = false;
           $('offline-gaia').hidden = true;
           $('saml-interstitial').hidden = true;
+          $('offline-ad-auth').hidden = true;
           break;
         case ScreenMode.OFFLINE:
           $('signin-frame').hidden = true;
           $('offline-gaia').hidden = false;
           $('saml-interstitial').hidden = true;
+          $('offline-ad-auth').hidden = true;
+          break;
+        case ScreenMode.AD_AUTH:
+          $('signin-frame').hidden = true;
+          $('offline-gaia').hidden = true;
+          $('saml-interstitial').hidden = true;
+          $('offline-ad-auth').hidden = false;
           break;
         case ScreenMode.SAML_INTERSTITIAL:
           $('signin-frame').hidden = true;
           $('offline-gaia').hidden = true;
           $('saml-interstitial').hidden = false;
+          $('offline-ad-auth').hidden = true;
           break;
       }
 
@@ -531,6 +554,8 @@ login.createScreen('GaiaSigninScreen', 'gaia-signin', function() {
           return $('signin-frame');
         case ScreenMode.OFFLINE:
           return $('offline-gaia');
+        case ScreenMode.AD_AUTH:
+          return $('offline-ad-auth');
         case ScreenMode.SAML_INTERSTITIAL:
           return $('saml-interstitial');
       }
@@ -606,6 +631,10 @@ login.createScreen('GaiaSigninScreen', 'gaia-signin', function() {
           this.loadOffline(params);
           break;
 
+        case ScreenMode.AD_AUTH:
+          this.loadAdAuth(params);
+          break;
+
         case ScreenMode.SAML_INTERSTITIAL:
           $('saml-interstitial').domain = data.enterpriseDomain;
           if (this.loading)
@@ -872,7 +901,12 @@ login.createScreen('GaiaSigninScreen', 'gaia-signin', function() {
      * @private
      */
     onAuthCompleted_: function(credentials) {
-      if (credentials.useOffline) {
+      if (this.screenMode_ == ScreenMode.AD_AUTH) {
+        this.email = credentials.username;
+        chrome.send('completeAdAuthentication',
+                    [credentials.username,
+                     credentials.password]);
+      } else if (credentials.useOffline) {
         this.email = credentials.email;
         chrome.send('authenticateUser',
                     [credentials.email,
@@ -1048,6 +1082,17 @@ login.createScreen('GaiaSigninScreen', 'gaia-signin', function() {
       this.onAuthReady_();
     },
 
+    loadAdAuth: function(params) {
+      this.loading = true;
+      this.startLoadingTimer_();
+      var ADAuthUI = this.getSigninFrame_();
+      if ('realm' in params) {
+        ADAuthUI.realm = params['realm'];
+        ADAuthUI.userRealm = '@' + params['realm'];
+      }
+      this.onAuthReady_();
+    },
+
     /**
      * Show/Hide error when user is not in whitelist. When UI is hidden
      * GAIA is reloaded.