Remove cullRect() from PaintOpBuffer.

cc/paint/drawing_display_item.h

Index: cc/paint/drawing_display_item.h
diff --git a/cc/paint/drawing_display_item.h b/cc/paint/drawing_display_item.h
index 677d0b62af8fcf073d0c1e3d545d3bc1e330950b..a746a0723f0cfa85ecff5d66578cc2c4b9ad1ce4 100644
--- a/cc/paint/drawing_display_item.h
+++ b/cc/paint/drawing_display_item.h
@@ -17,7 +17,8 @@ namespace cc {
 class CC_PAINT_EXPORT DrawingDisplayItem : public DisplayItem {
  public:
   DrawingDisplayItem();
-  explicit DrawingDisplayItem(sk_sp<const PaintRecord> record);
+  explicit DrawingDisplayItem(sk_sp<const PaintRecord> record,
+                              const SkRect& bounds);
   explicit DrawingDisplayItem(const DrawingDisplayItem& item);
   ~DrawingDisplayItem() override;
 
@@ -25,6 +26,7 @@ class CC_PAINT_EXPORT DrawingDisplayItem : public DisplayItem {
   size_t OpCount() const;
 
   const sk_sp<const PaintRecord> picture;
+  SkRect bounds;
 };
 
 }  // namespace cc