ChromeOS: Update Welcome screen material design OOBE.

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

Index: chrome/browser/resources/chromeos/login/oobe_welcome_dialog.js
diff --git a/chrome/browser/resources/chromeos/login/oobe_welcome_dialog.js b/chrome/browser/resources/chromeos/login/oobe_welcome_dialog.js
new file mode 100644
index 0000000000000000000000000000000000000000..177db4d4d6a9e6776efa83d321e249ac70827c4d
--- /dev/null
+++ b/chrome/browser/resources/chromeos/login/oobe_welcome_dialog.js
@@ -0,0 +1,28 @@
+// Copyright 2016 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({
+  is: 'oobe-welcome-dialog',
+  properties: {
+    /**
+     * Currently selected system language (display name).
+     */
+    currentLanguage: {
+      type: String,
+      value: '',
+    },
+  },
+
+  onLanguageClicked_: function() {
+    this.fire('language-button-clicked');
+  },
+
+  onAccessibilityClicked_: function() {
+    this.fire('accessibility-button-clicked');
+  },
+
+  onNextClicked_: function() {
+    this.fire('next-button-clicked');
+  }
+});