Fix exception when running Sheriff-o-Matic tests.

Tools/GardeningServer/ui/test/ct-commit-list-tests.html

Index: Tools/GardeningServer/ui/test/ct-commit-list-tests.html
diff --git a/Tools/GardeningServer/ui/test/ct-commit-list-tests.html b/Tools/GardeningServer/ui/test/ct-commit-list-tests.html
index 48815c9fea7a129cdc5e1b6cd60c287be869c1a1..9b18cb160be85646c9d14f53b305bdc635ab127b 100644
--- a/Tools/GardeningServer/ui/test/ct-commit-list-tests.html
+++ b/Tools/GardeningServer/ui/test/ct-commit-list-tests.html
@@ -30,11 +30,11 @@ describe('ct-commit-list', function() {
             expanded: false }
       ];
 
-      var CommitList = Object.create(Object);
-      CommitList.prototype.repositories = function() {
-        return repos;
+      list.commitList = {
+        repositories: function() {
+          return repos;
+        }
       };
-      list.commitList = CommitList;
 
       setTimeout(done);
     });