[Sheriff-o-matic] Use likely_revisions instead of first_failing/last_passing

Tools/GardeningServer/model/ct-failure-group.html

Index: Tools/GardeningServer/model/ct-failure-group.html
diff --git a/Tools/GardeningServer/model/ct-failure-group.html b/Tools/GardeningServer/model/ct-failure-group.html
index aca2c2e7f6b43eb81bc246db6107d18574e0f089..812a2a5efaac998e5f0e7996e3e8759402c5198c 100644
--- a/Tools/GardeningServer/model/ct-failure-group.html
+++ b/Tools/GardeningServer/model/ct-failure-group.html
@@ -7,8 +7,9 @@ found in the LICENSE file.
 <link rel="import" href="ct-commit-list.html">
 
 <script>
-function CTFailureGroup(failures) {
+function CTFailureGroup(failures, commitList) {
   this.failures = failures;
+  this.commitList = commitList;
   this._annotation = CTFailureGroup._mergeAnnotations(failures.map(function(failure) {
     return failure.annotations();
   }).flatten());
@@ -27,10 +28,6 @@ CTFailureGroup.prototype.unsnooze = function() {
   });
 };
 
-CTFailureGroup.prototype.commitList = function(commits) {
-  return new CTCommitList(this, commits);
-};
-
 CTFailureGroup.prototype.setBug = function(bug) {
   if (/^[0-9]+$/.test(bug))
     bug = 'http://crbug.com/' + bug;