Remove cullRect() from PaintOpBuffer.

cc/paint/drawing_display_item.cc

Index: cc/paint/drawing_display_item.cc
diff --git a/cc/paint/drawing_display_item.cc b/cc/paint/drawing_display_item.cc
index f8819c01e9864f1805cdc283ee70f7b2e31a14f0..5fc920bcd18af24880b572b3065ac618c393689a 100644
--- a/cc/paint/drawing_display_item.cc
+++ b/cc/paint/drawing_display_item.cc
@@ -8,13 +8,15 @@
 
 namespace cc {
 
-DrawingDisplayItem::DrawingDisplayItem() : DisplayItem(DRAWING) {}
+DrawingDisplayItem::DrawingDisplayItem()
+    : DisplayItem(DRAWING), bounds(SkRect::MakeEmpty()) {}
 
-DrawingDisplayItem::DrawingDisplayItem(sk_sp<const PaintRecord> record)
-    : DisplayItem(DRAWING), picture(std::move(record)) {}
+DrawingDisplayItem::DrawingDisplayItem(sk_sp<const PaintRecord> record,
+                                       const SkRect& bounds)
+    : DisplayItem(DRAWING), picture(std::move(record)), bounds(bounds) {}
 
 DrawingDisplayItem::DrawingDisplayItem(const DrawingDisplayItem& item)
-    : DisplayItem(DRAWING), picture(item.picture) {}
+    : DisplayItem(DRAWING), picture(item.picture), bounds(item.bounds) {}
 
 DrawingDisplayItem::~DrawingDisplayItem() = default;