Add PaintCanvas::drawDisplayItemList

cc/paint/skia_paint_canvas.cc

Index: cc/paint/skia_paint_canvas.cc
diff --git a/cc/paint/skia_paint_canvas.cc b/cc/paint/skia_paint_canvas.cc
index 03e05aed5ccb5d337a38f26dd13e1ad2cfab7d71..71dd8f6ceb37cd1a033cbcc709dabcaaa9532a77 100644
--- a/cc/paint/skia_paint_canvas.cc
+++ b/cc/paint/skia_paint_canvas.cc
@@ -5,6 +5,7 @@
 #include "cc/paint/paint_canvas.h"
 
 #include "base/memory/ptr_util.h"
+#include "cc/paint/display_item_list.h"
 #include "cc/paint/paint_record.h"
 #include "cc/paint/paint_recorder.h"
 #include "third_party/skia/include/core/SkAnnotation.h"
@@ -265,6 +266,15 @@ void SkiaPaintCanvas::drawTextBlob(sk_sp<SkTextBlob> blob,
   canvas_->drawTextBlob(blob.get(), x, y, ToSkPaint(flags));
 }
 
+void SkiaPaintCanvas::drawDisplayItemList(
+    const SkRect& bounds,
+    const DisplayItemList* display_item_list) {
+  SkPictureRecorder recorder;
+  SkCanvas* canvas = recorder.beginRecording(bounds);
+  display_item_list->Raster(canvas, nullptr);
+  canvas_->drawPicture(recorder.finishRecordingAsPicture());
+}
+
 void SkiaPaintCanvas::drawPicture(sk_sp<const PaintRecord> record,
                                   const SkMatrix* matrix,
                                   const PaintFlags* flags) {