[Devtools] Cleanup DataGrid.js

third_party/WebKit/Source/devtools/front_end/ui_lazy/ViewportDataGrid.js

Index: third_party/WebKit/Source/devtools/front_end/ui_lazy/ViewportDataGrid.js
diff --git a/third_party/WebKit/Source/devtools/front_end/ui_lazy/ViewportDataGrid.js b/third_party/WebKit/Source/devtools/front_end/ui_lazy/ViewportDataGrid.js
index 68d6b83be8ce8a61407da94806195f12787ec808..05f7c6ff935e80ffa9868e66b39710d8d597decc 100644
--- a/third_party/WebKit/Source/devtools/front_end/ui_lazy/ViewportDataGrid.js
+++ b/third_party/WebKit/Source/devtools/front_end/ui_lazy/ViewportDataGrid.js
@@ -243,7 +243,7 @@ WebInspector.ViewportDataGrid.prototype = {
         var previousElement = this._topFillerRow;
         if (previousElement.nextSibling === this._hiddenWheelTarget)
             previousElement = this._hiddenWheelTarget;
-        var tBody = this.dataTableBody;
+        var tBody = this._dataTableBody;

[lushnikov, 2016/10/24 23:34:55]

this is a file-private field; you should expose it to the descendant via public
or protected getter method on the DataGrid

[allada, 2016/10/24 23:49:11]

Done.

         var offset = viewportState.offset;
         for (var i = 0; i < visibleNodes.length; ++i) {
             var node = visibleNodes[i];