Fix table cell background caching issue about interest rect

Source/core/paint/DisplayItemListPaintTest.h

Index: Source/core/paint/DisplayItemListPaintTest.h
diff --git a/Source/core/paint/DisplayItemListPaintTest.h b/Source/core/paint/DisplayItemListPaintTest.h
new file mode 100644
index 0000000000000000000000000000000000000000..fe86e90a1774d07848089f1465443bdd55b9003f
--- /dev/null
+++ b/Source/core/paint/DisplayItemListPaintTest.h
@@ -0,0 +1,140 @@
+// Copyright 2015 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 DisplayItemListPaintTest_h
+#define DisplayItemListPaintTest_h
+
+#include "core/frame/FrameView.h"
+#include "core/layout/LayoutTestHelper.h"
+#include "core/layout/LayoutView.h"
+#include "core/paint/DeprecatedPaintLayer.h"
+#include "platform/graphics/GraphicsLayer.h"
+#include <gtest/gtest.h>
+
+namespace blink {
+
+class DisplayItemListPaintTest : public RenderingTest {
+public:
+    DisplayItemListPaintTest()
+        : m_layoutView(nullptr)
+        , m_originalSlimmingPaintEnabled(RuntimeEnabledFeatures::slimmingPaintEnabled()) { }
+
+protected:
+    LayoutView& layoutView() { return *m_layoutView; }
+    DisplayItemList& rootDisplayItemList() { return *layoutView().layer()->graphicsLayerBacking()->displayItemList(); }
+    const DisplayItems& newDisplayItemsBeforeUpdate() { return rootDisplayItemList().m_newDisplayItems; }
+
+private:
+    void SetUp() override
+    {
+        RuntimeEnabledFeatures::setSlimmingPaintEnabled(true);
+
+        RenderingTest::SetUp();
+        enableCompositing();
+
+        m_layoutView = document().view()->layoutView();
+        ASSERT_TRUE(m_layoutView);
+    }
+
+    void TearDown() override
+    {
+        RuntimeEnabledFeatures::setSlimmingPaintEnabled(m_originalSlimmingPaintEnabled);
+    }
+
+    LayoutView* m_layoutView;
+    bool m_originalSlimmingPaintEnabled;
+};
+
+// Slimming paint v2 has subtly different behavior on some paint tests. This
+// class is used to test only v2 behavior while maintaining v1 test coverage.
+class DisplayItemListPaintTestForSlimmingPaintV2 : public RenderingTest {
+public:
+    DisplayItemListPaintTestForSlimmingPaintV2()
+        : m_layoutView(nullptr)
+        , m_originalSlimmingPaintV2Enabled(RuntimeEnabledFeatures::slimmingPaintV2Enabled()) { }
+
+protected:
+    LayoutView& layoutView() { return *m_layoutView; }
+    DisplayItemList& rootDisplayItemList() { return *layoutView().layer()->graphicsLayerBacking()->displayItemList(); }
+    const DisplayItems& newDisplayItemsBeforeUpdate() { return rootDisplayItemList().m_newDisplayItems; }
+
+    // Expose some document lifecycle steps for checking new display items before commiting.
+    void updateLifecyclePhasesToPaintForSlimmingPaintV2Clean()
+    {
+        document().view()->updateLifecyclePhasesInternal(FrameView::OnlyUpToCompositingCleanPlusScrolling);
+        document().view()->invalidateTreeIfNeededRecursive();
+        document().view()->paintForSlimmingPaintV2();
+    }
+    void compositeForSlimmingPaintV2() { document().view()->compositeForSlimmingPaintV2(); }
+
+private:
+    void SetUp() override
+    {
+        ASSERT_TRUE(RuntimeEnabledFeatures::slimmingPaintEnabled());
+        RuntimeEnabledFeatures::setSlimmingPaintV2Enabled(true);
+
+        RenderingTest::SetUp();
+        enableCompositing();
+
+        m_layoutView = document().view()->layoutView();
+        ASSERT_TRUE(m_layoutView);
+    }
+
+    void TearDown() override
+    {
+        RuntimeEnabledFeatures::setSlimmingPaintV2Enabled(m_originalSlimmingPaintV2Enabled);
+    }
+
+    LayoutView* m_layoutView;
+    bool m_originalSlimmingPaintV2Enabled;
+};
+
+class TestDisplayItem final : public DisplayItem {
+public:
+    TestDisplayItem(const DisplayItemClientWrapper& client, Type type) : DisplayItem(client, type, sizeof(*this)) { }
+
+    void replay(GraphicsContext&) final { ASSERT_NOT_REACHED(); }
+    void appendToWebDisplayItemList(WebDisplayItemList*) const final { ASSERT_NOT_REACHED(); }
+};
+
+#ifndef NDEBUG
+#define TRACE_DISPLAY_ITEMS(i, expected, actual) \
+    String trace = String::format("%d: ", (int)i) + "Expected: " + (expected).asDebugString() + " Actual: " + (actual).asDebugString(); \
+    SCOPED_TRACE(trace.utf8().data());
+#else
+#define TRACE_DISPLAY_ITEMS(i, expected, actual)
+#endif
+
+#define EXPECT_DISPLAY_LIST_BASE(actual, expectedSize, ...) \
+    do { \
+        EXPECT_EQ((size_t)expectedSize, actual.size()); \
+        if (expectedSize != actual.size()) \
+            break; \
+        const TestDisplayItem expected[] = { __VA_ARGS__ }; \
+        for (size_t index = 0; index < std::min<size_t>(actual.size(), expectedSize); index++) { \
+            TRACE_DISPLAY_ITEMS(index, expected[index], actual[index]); \
+            EXPECT_EQ(expected[index].client(), actual[index].client()); \
+            EXPECT_EQ(expected[index].type(), actual[index].type()); \
+        } \
+    } while (false);
+
+#ifndef NDEBUG
+#define EXPECT_DISPLAY_LIST_WITH_RED_FILL_IN_DEBUG(actual, expectedSizeWithoutFill, ...) \
+    EXPECT_DISPLAY_LIST_BASE( \
+        actual, expectedSizeWithoutFill + 1, \
+        TestDisplayItem(*document().layoutView()->layer()->graphicsLayerBacking(), DisplayItem::DebugRedFill), \
+        __VA_ARGS__)
+#define EXPECT_DISPLAY_LIST_WITH_CACHED_RED_FILL_IN_DEBUG(actual, expectedSizeWithoutFill, ...) \
+    EXPECT_DISPLAY_LIST_BASE( \
+        actual, expectedSizeWithoutFill + 1, \
+        TestDisplayItem(*document().layoutView()->layer()->graphicsLayerBacking(), DisplayItem::drawingTypeToCachedDrawingType(DisplayItem::DebugRedFill)), \
+        __VA_ARGS__)
+#else
+#define EXPECT_DISPLAY_LIST_WITH_RED_FILL_IN_DEBUG EXPECT_DISPLAY_LIST_BASE
+#define EXPECT_DISPLAY_LIST_WITH_CACHED_RED_FILL_IN_DEBUG EXPECT_DISPLAY_LIST_BASE
+#endif
+
+} // namespace blink
+
+#endif // DisplayItemListPaintTest_h