Fix tests broken in r178299.

Tools/GardeningServer/ui/ct-tree-status-tests.html

 <!--
 Copyright 2014 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.
 -->
 
 <link rel="import" href="ct-tree-status.html">
 
 <script>
 (function () {
@@ skipping 34 matching lines @@
   throttledtree.setAttribute("project", "throttled-tree-project");
   var closedtree = document.createElement("ct-tree-status");
   closedtree.setAttribute("project", "closed-tree-project");
   simulator.runTest(function() {
     var urlByName = treestatus.urlByName;
     treestatus.urlByName = function(name) {
       return name + "-status.appspot.com/current?format=json";
     }
     Promise.all([
       opentree.update().then(function() {
-        equal(opentree.status, "Tree is open");
-        equal(opentree.$.content.style.backgroundColor, "rgb(72, 209, 204)");
+        equal(opentree.message, "Tree is open");
+        equal(opentree.status, "open");
       }),
       throttledtree.update().then(function() {
-        equal(throttledtree.status,
+        equal(throttledtree.message,
               "Tree is throttled just for fun by username@test.org");
-        equal(throttledtree.$.content.style.backgroundColor,
-              "rgb(240, 230, 140)");
+        equal(throttledtree.status, "throttled");
       }),
       closedtree.update().then(function() {
-        equal(closedtree.status,
+        equal(closedtree.message,
               "Tree is closed for maintenance by username@test.org");
-        equal(closedtree.$.content.style.backgroundColor,
-              "rgb(255, 99, 71)");
+        equal(closedtree.status, "closed");
       })
     ]).then(function() {
       start();
       treestatus.urlByName = urlByName;
     });
   });
 });
 
 })();
 </script>