ChromeOS: Implement Language Selection screen of material design OOBE.

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

Index: chrome/browser/resources/chromeos/login/oobe_buttons.js
diff --git a/chrome/browser/resources/chromeos/login/oobe_buttons.js b/chrome/browser/resources/chromeos/login/oobe_buttons.js
index eff0ba82b3c1636a4e7269679f15f066cc6286c2..9b3238df60c7bb4d42aad3593a817363c1e2e80d 100644
--- a/chrome/browser/resources/chromeos/login/oobe_buttons.js
+++ b/chrome/browser/resources/chromeos/login/oobe_buttons.js
@@ -38,3 +38,24 @@ Polymer({
       e.stopPropagation();
   }
 });
+
+Polymer({
+  is: 'oobe-text-button',
+
+  properties: {
+    disabled: {type: Boolean, value: false, reflectToAttribute: true},
+
+    label: String,
+
+    inverse: Boolean,
+  },
+
+  focus: function() {
+    this.$.textButton.focus();
+  },
+
+  onClick_: function(e) {
+    if (this.disabled)
+      e.stopPropagation();
+  }
+});