Blink-side contiguous allocation of display items.

Source/core/paint/LayoutObjectDrawingRecorderTest.cpp

Index: Source/core/paint/LayoutObjectDrawingRecorderTest.cpp
diff --git a/Source/core/paint/LayoutObjectDrawingRecorderTest.cpp b/Source/core/paint/LayoutObjectDrawingRecorderTest.cpp
index 104f075d45d39c4af10c38451fcb240d08608eb6..7d61195b282983b85c9cb044f27684ac3985bce0 100644
--- a/Source/core/paint/LayoutObjectDrawingRecorderTest.cpp
+++ b/Source/core/paint/LayoutObjectDrawingRecorderTest.cpp
@@ -68,12 +68,12 @@ void drawRect(GraphicsContext& context, LayoutView& layoutView, PaintPhase phase
     context.drawRect(rect);
 }
 
-bool isDrawing(const DisplayItems::ItemHandle& item)
+bool isDrawing(const DisplayItem& item)
 {
     return DisplayItem::isDrawingType(item.type());
 }
 
-bool isCached(const DisplayItems::ItemHandle& item)
+bool isCached(const DisplayItem& item)
 {
     return DisplayItem::isCachedType(item.type());
 }
@@ -89,7 +89,7 @@ TEST_F(LayoutObjectDrawingRecorderTest, Nothing)
     EXPECT_EQ((size_t)1, rootDisplayItemList().displayItems().size());
     const auto& item = rootDisplayItemList().displayItems()[0];
     ASSERT_TRUE(isDrawing(item));
-    EXPECT_FALSE(item.picture());
+    EXPECT_FALSE(static_cast<const DrawingDisplayItem&>(item).picture());
 }
 
 TEST_F(LayoutObjectDrawingRecorderTest, Rect)