Invalidate row/section for backgrounds when cell's geometry changes

third_party/WebKit/Source/core/paint/TableCellPaintInvalidator.h

Index: third_party/WebKit/Source/core/paint/TableCellPaintInvalidator.h
diff --git a/third_party/WebKit/Source/core/paint/TableCellPaintInvalidator.h b/third_party/WebKit/Source/core/paint/TableCellPaintInvalidator.h
new file mode 100644
index 0000000000000000000000000000000000000000..d47b5825cf88bdded8ac9107f61fed748a08e7b5
--- /dev/null
+++ b/third_party/WebKit/Source/core/paint/TableCellPaintInvalidator.h
@@ -0,0 +1,33 @@
+// 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.
+
+#ifndef TableCellPaintInvalidator_h
+#define TableCellPaintInvalidator_h
+
+#include "platform/graphics/PaintInvalidationReason.h"
+#include "platform/wtf/Allocator.h"
+
+namespace blink {
+
+class LayoutTableCell;
+struct PaintInvalidatorContext;
+
+class TableCellPaintInvalidator {
+  STACK_ALLOCATED();
+
+ public:
+  TableCellPaintInvalidator(const LayoutTableCell& cell,
+                            const PaintInvalidatorContext& context)
+      : cell_(cell), context_(context) {}
+
+  PaintInvalidationReason InvalidatePaint();
+
+ private:
+  const LayoutTableCell& cell_;
+  const PaintInvalidatorContext& context_;
+};
+
+}  // namespace blink
+
+#endif