Extract LayoutTableSection::CellStruct to a standalone class TableGridCell

third_party/WebKit/Source/core/layout/TableGridCell.cpp

Index: third_party/WebKit/Source/core/layout/TableGridCell.cpp
diff --git a/third_party/WebKit/Source/core/layout/TableGridCell.cpp b/third_party/WebKit/Source/core/layout/TableGridCell.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..ad4126881c36f213687565c0aae17a2377c16289
--- /dev/null
+++ b/third_party/WebKit/Source/core/layout/TableGridCell.cpp
@@ -0,0 +1,15 @@
+// Copyright 2017 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "core/layout/TableGridCell.h"
+
+#include "core/layout/LayoutTableCell.h"
+
+namespace blink {
+
+TableGridCell::TableGridCell() {}
+
+TableGridCell::~TableGridCell() {}
+
+}  // namespace blink