Showing only chromium status on chromium page, and both on blink

Tools/GardeningServer/ui/test/ct-unexpected-failures-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-unexpected-failures.html'>
 
 <link rel="import" href="../../model/ct-commit-list.html">
 <link rel="import" href="../../model/ct-failures.html">
@@ skipping 47 matching lines @@
       mocktree: [new CTStepFailure('step', 'reason', [])]
     };
     hasFailures.tree = 'mocktree';
 
     setTimeout(function() {
       assert.notOk(hasFailures.shadowRoot.querySelector('ct-party-time'));
 
       done();
     });
   });
+
+  it('test showing only chromium tree status when chromium', function(done) {
+    var noFailures = document.createElement('ct-unexpected-failures');
+    noFailures.tree = 'chromium';
+
+    setTimeout(function() {
+      assert.equal(noFailures.shadowRoot.querySelectorAll('ct-tree-status').length, 1);
+
+      done();
+    });
+  });
+
+  it('test showing both chromium and blink tree status when blink', function(done) {
+    var noFailures = document.createElement('ct-unexpected-failures');
+    noFailures.tree = 'blink';
+
+    setTimeout(function() {
+      assert.equal(noFailures.shadowRoot.querySelectorAll('ct-tree-status').length, 2);
+
+      done();
+    });
+  });
+
 });
 
 })();
 </script>