Fixed Chrome OS password changing dialog.

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

 /* Copyright 2015 The Chromium Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 Polymer('gaia-password-changed', {
   invalidate: function() {
-    this.$.oldPasswordInput.setValid(false);
+    this.$.oldPasswordInput.isInvalid = true;
   },
 
   reset: function() {
     this.$.animatedPages.selected = 0;
     this.clearPassword();
-    this.$.oldPasswordInput.setValid(true);
+    this.$.oldPasswordInput.isInvalid = false;
     this.disabled = false;
     this.$.closeButton.hidden = false;
     this.$.oldPasswordCard.classList.remove('disabled');
   },
 
   ready: function() {
-    this.$.oldPasswordInput.addEventListener('buttonClick', function() {
-      var inputPassword = this.$.oldPasswordInput.inputValue;
+    this.$.oldPasswordInputForm.addEventListener('submit', function() {
+      var inputPassword = this.$.oldPasswordInput.value;
       if (!inputPassword)
         this.invalidate();
       else {
         this.$.oldPasswordCard.classList.add('disabled');
         this.disabled = true;
         this.fire('passwordEnter', {password: inputPassword});
       }
     }.bind(this));
   },
 
   focus: function() {
     if (this.$.animatedPages.selected == 0)
       this.$.oldPasswordInput.focus();
   },
 
   set disabled(value) {
-    this.$.oldPasswordInput.disabled = value;
+    this.$.oldPasswordInputForm.disabled = value;
   },
 
   onForgotPasswordClicked: function() {
     this.clearPassword();
     this.$.animatedPages.selected += 1;
   },
 
   onTryAgainClicked: function() {
-    this.$.oldPasswordInput.setValid(true);
+    this.$.oldPasswordInput.isInvalid = false;
     this.$.animatedPages.selected -= 1;
   },
 
   onTransitionEnd: function() {
     this.focus();
   },
 
   clearPassword: function() {
-    this.$.oldPasswordInput.inputValue = '';
+    this.$.oldPasswordInput.value = '';
   },
 
   onProceedClicked: function() {
     this.disabled = true;
     this.$.closeButton.hidden = true;
     this.$.animatedPages.selected = 2;
     this.fire('proceedAnyway');
   },
 
   onClose: function() {
     this.disabled = true;
     this.fire('cancel');
   },
 });