Timeline: remove TimelineModel inferred properties from TracingModel.Event

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 6c3893c61147c6c85720cf9824ca7c6698d8adc8..66af5bc06a75b213d5d6014be8ab445df59cb220 100644
--- a/third_party/WebKit/Source/devtools/front_end/timeline/TimelineFlameChart.js
+++ b/third_party/WebKit/Source/devtools/front_end/timeline/TimelineFlameChart.js
@@ -714,10 +714,13 @@ WebInspector.TimelineFlameChartDataProvider = class extends WebInspector.Timelin
 
     if (type === WebInspector.TimelineFlameChartEntryType.Event) {
       var event = /** @type {!WebInspector.TracingModel.Event} */ (this._entryData[entryIndex]);
-      if (event.hasCategory(WebInspector.TimelineModel.Category.LatencyInfo) && event.timeWaitingForMainThread) {
-        context.fillStyle = 'hsla(0, 70%, 60%, 1)';
-        var width = Math.floor(unclippedBarX - barX + event.timeWaitingForMainThread * timeToPixels);
-        context.fillRect(barX, barY + barHeight - 3, width, 2);
+      if (event.hasCategory(WebInspector.TimelineModel.Category.LatencyInfo)) {
+        var timeWaitingForMainThread = WebInspector.TimelineData.forEvent(event);
+        if (timeWaitingForMainThread) {
+          context.fillStyle = 'hsla(0, 70%, 60%, 1)';
+          var width = Math.floor(unclippedBarX - barX + timeWaitingForMainThread * timeToPixels);
+          context.fillRect(barX, barY + barHeight - 3, width, 2);
+        }
       }
       if (event.warning)
         paintWarningDecoration(barX, barWidth - 1.5);