DevTools: Fix datagrid resizing from an extreme state.

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

Index: third_party/WebKit/Source/devtools/front_end/ui_lazy/DataGrid.js
diff --git a/third_party/WebKit/Source/devtools/front_end/ui_lazy/DataGrid.js b/third_party/WebKit/Source/devtools/front_end/ui_lazy/DataGrid.js
index 49d49e9a311c38e7940e6ab2ebbf303bdff9c828..039b8496ab74aa7aed806764145af2799b6381ca 100644
--- a/third_party/WebKit/Source/devtools/front_end/ui_lazy/DataGrid.js
+++ b/third_party/WebKit/Source/devtools/front_end/ui_lazy/DataGrid.js
@@ -610,7 +610,7 @@ UI.DataGrid = class extends Common.Object {
       for (var i = 0; i < numColumns; i++) {
         var column = this._visibleColumnsArray[i];
         if (!column.weight)
-          column.weight = 100 * cells[i].offsetWidth / tableWidth;
+          column.weight = 100 * cells[i].offsetWidth / tableWidth || 10;
       }
       this._columnWidthsInitialized = true;
     }