Polished UI for the host side of pairing flow.

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

Index: chrome/browser/resources/chromeos/login/login_common.js
diff --git a/chrome/browser/resources/chromeos/login/login_common.js b/chrome/browser/resources/chromeos/login/login_common.js
index cc67aa4de28415688990458bc4d869555cd1f85e..23b8208dca92fb44d4cf2cba9b49a9068e87892b 100644
--- a/chrome/browser/resources/chromeos/login/login_common.js
+++ b/chrome/browser/resources/chromeos/login/login_common.js
@@ -353,19 +353,30 @@ disableTextSelectAndDrag(function(e) {
   js: ['chrome://oobe/enrollment.js']
 }].forEach(cr.ui.login.ResourceLoader.registerAssets);
 
-document.addEventListener('DOMContentLoaded', function() {
+(function() {
   'use strict';
 
-  // Immediately load async assets.
-  // TODO(dconnelly): remove this at some point and only load as needed.
-  // See crbug.com/236426
-  cr.ui.login.ResourceLoader.loadAssets(SCREEN_OOBE_ENROLLMENT, function() {
-    // This screen is async-loaded so we manually trigger i18n processing.
-    i18nTemplate.process($('oauth-enrollment'), loadTimeData);
-    // Delayed binding since this isn't defined yet.
-    login.OAuthEnrollmentScreen.register();
-  });
+  function initializeOobe() {
+    // Immediately load async assets.
+    // TODO(dconnelly): remove this at some point and only load as needed.
+    // See crbug.com/236426
+    cr.ui.login.ResourceLoader.loadAssets(SCREEN_OOBE_ENROLLMENT, function() {
+      // This screen is async-loaded so we manually trigger i18n processing.
+      i18nTemplate.process($('oauth-enrollment'), loadTimeData);
+      // Delayed binding since this isn't defined yet.
+      login.OAuthEnrollmentScreen.register();
+    });
 
-  // Delayed binding since this isn't defined yet.
-  cr.ui.Oobe.initialize();
-});
+    cr.ui.Oobe.initialize();
+  }
+
+  document.addEventListener('DOMContentLoaded', function() {
+    if (!window['WAIT_FOR_POLYMER']) {
+      initializeOobe();
+      return;
+    }
+    window.addEventListener('polymer-ready', function() {
+      initializeOobe();
+    });
+  });
+})();