ChromeOS MD-OOBE: Add Timezone Selection screen.

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
index 177db4d4d6a9e6776efa83d321e249ac70827c4d..87cc78a6e48945009b41ebf5cd514ed639a53194 100644
--- a/chrome/browser/resources/chromeos/login/oobe_welcome_dialog.js
+++ b/chrome/browser/resources/chromeos/login/oobe_welcome_dialog.js
@@ -12,6 +12,13 @@ Polymer({
       type: String,
       value: '',
     },
+    /**
+     * Controls visibility of "Timezone" button.
+     */
+    timezoneButtonVisible: {
+      type: Boolean,
+      value: false,
+    },
   },
 
   onLanguageClicked_: function() {
@@ -22,6 +29,10 @@ Polymer({
     this.fire('accessibility-button-clicked');
   },
 
+  onTimezoneClicked_: function() {
+    this.fire('timezone-button-clicked');
+  },
+
   onNextClicked_: function() {
     this.fire('next-button-clicked');
   }