Merge "DevTools: Fix a regression that double-clicking an item in the Network tab doesn't open the …

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

Index: third_party/WebKit/Source/devtools/front_end/data_grid/ViewportDataGrid.js
diff --git a/third_party/WebKit/Source/devtools/front_end/data_grid/ViewportDataGrid.js b/third_party/WebKit/Source/devtools/front_end/data_grid/ViewportDataGrid.js
index df6f3304bf68509e202b69e792e52a5c46fc0a2b..dc131ab5c057f45dff81db4829e920901de7229c 100644
--- a/third_party/WebKit/Source/devtools/front_end/data_grid/ViewportDataGrid.js
+++ b/third_party/WebKit/Source/devtools/front_end/data_grid/ViewportDataGrid.js
@@ -194,7 +194,8 @@ DataGrid.ViewportDataGrid = class extends DataGrid.DataGrid {
       var element = node.element();
       node.willAttach();
       node.setStriped((offset + i) % 2 === 0);
-      tBody.insertBefore(element, previousElement.nextSibling);
+      if (element !== previousElement.nextSibling)
+        tBody.insertBefore(element, previousElement.nextSibling);
       node.revealed = true;
       previousElement = element;
     }