TimelineFlameChart: selectRecord implementation

Source/devtools/front_end/TimelinePanel.js

Index: Source/devtools/front_end/TimelinePanel.js
diff --git a/Source/devtools/front_end/TimelinePanel.js b/Source/devtools/front_end/TimelinePanel.js
index b0bed26dfd23801f43c1c401d440a6e0e72b8464..c889f42a6234dc97046c2d51ce545fc548448f21 100644
--- a/Source/devtools/front_end/TimelinePanel.js
+++ b/Source/devtools/front_end/TimelinePanel.js
@@ -581,6 +581,7 @@ WebInspector.TimelinePanel.prototype = {
     {
         this.requestWindowTimes(0, Infinity);
         this._windowFilter._reset();
+        delete this._selectedRecord;
         if (this._lazyFrameModel)
             this._lazyFrameModel.reset();
         for (var i = 0; i < this._currentViews.length; ++i)
@@ -749,6 +750,9 @@ WebInspector.TimelinePanel.prototype = {
 
     _updateSelectionDetails: function()
     {
+        if (this._selectedRecord)
+            return;
+
         var startTime = this._windowStartTime;
         var endTime = this._windowEndTime;
 
@@ -818,6 +822,7 @@ WebInspector.TimelinePanel.prototype = {
     selectRecord: function(record)
     {
         this._detailsLinkifier.reset();
+        this._selectedRecord = record;
 
         if (!record) {
             this._updateSelectionDetails();