Clean up calls to ToSkPicture

cc/paint/paint_canvas.h

Index: cc/paint/paint_canvas.h
diff --git a/cc/paint/paint_canvas.h b/cc/paint/paint_canvas.h
index 6be10b0495d8d3552cdc558ad100c04f1c9b8f8e..9f6bbbf0a71f88afd4bb17676af7b18819176a3c 100644
--- a/cc/paint/paint_canvas.h
+++ b/cc/paint/paint_canvas.h
@@ -169,12 +169,7 @@ class CC_PAINT_EXPORT PaintCanvas {
       const SkRect& bounds,
       const DisplayItemList* display_item_list) = 0;
 
-  virtual void drawPicture(sk_sp<const PaintRecord> record,
-                           const SkMatrix* matrix,
-                           const PaintFlags* flags) = 0;
-  void drawPicture(sk_sp<const PaintRecord> record) {
-    drawPicture(record, nullptr, nullptr);
-  }
+  virtual void drawPicture(sk_sp<const PaintRecord> record) = 0;
 
   virtual bool isClipEmpty() const = 0;
   virtual bool isClipRect() const = 0;