DevTools: Timeline: speed-up records processing.

It was awfully slow because we updated selection and calculated aggregates for every added record.
So the complexity was at least n^2.
I moved the _updateSearchHighlight call to _onRecordingStopped

BUG=

Review URL: https://codereview.chromium.org/703113003

git-svn-id: svn://svn.chromium.org/blink/trunk@184909 bbb929c8-8fbe-4397-9dbb-9b2b20218538

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

@@ -814,23 +814,19 @@ WebInspector.TimelinePanel.prototype = {
         }
         this._hideProgressPane();
         this._overviewPane.update();
-    },
-
-    _onRecordAdded: function(event)
-    {
-        this._addRecord(/** @type {!WebInspector.TimelineModel.Record} */(event.data));
+        this._updateSearchHighlight(false, true);
     },
 
     /**
-     * @param {!WebInspector.TimelineModel.Record} record
+     * @param {!WebInspector.Event} event
      */
-    _addRecord: function(record)
+    _onRecordAdded: function(event)
     {
+        var record = /** @type {!WebInspector.TimelineModel.Record} */ (event.data);
         if (this._lazyFrameModel && !this._tracingModel)
             this._lazyFrameModel.addRecord(record);
         for (var i = 0; i < this._currentViews.length; ++i)
             this._currentViews[i].addRecord(record);
-        this._updateSearchHighlight(false, true);
     },
 
     /**