DevTools: Use stableSort for async events

third_party/WebKit/Source/devtools/front_end/timeline/TimelineFlameChart.js

Index: third_party/WebKit/Source/devtools/front_end/timeline/TimelineFlameChart.js
diff --git a/third_party/WebKit/Source/devtools/front_end/timeline/TimelineFlameChart.js b/third_party/WebKit/Source/devtools/front_end/timeline/TimelineFlameChart.js
index f7154e4d5b11623345cafcc006cbabc6a3095275..06198d83ac55e77167ea4bfba43d3fb9138c812e 100644
--- a/third_party/WebKit/Source/devtools/front_end/timeline/TimelineFlameChart.js
+++ b/third_party/WebKit/Source/devtools/front_end/timeline/TimelineFlameChart.js
@@ -562,10 +562,10 @@ WebInspector.TimelineFlameChartDataProvider.prototype = {
         for (var groupIndex = 0; groupIndex < groupArray.length; ++groupIndex) {
             var group = groupArray[groupIndex];
             var events = asyncEvents.get(group);
-            if (events) {
-                var title = WebInspector.TimelineUIUtils.titleForAsyncEventGroup(groups.input);
-                this._appendAsyncEventsGroup(title, events, this._headerLevel1);
-            }
+            if (!events)
+                continue;
+            var title = WebInspector.TimelineUIUtils.titleForAsyncEventGroup(group);
+            this._appendAsyncEventsGroup(title, events, this._headerLevel1);
         }
     },