update beginRecording to not pass flags

See https://skia-review.googlesource.com/c/skia/+/312248

Change-Id: I49dec4ff0e6f19329e300eb6e94b209790229985
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2367441Reviewed-by: Florin Malita <fmalita@chromium.org>
Reviewed-by: Philip Rogers <pdr@chromium.org>
Commit-Queue: Mike Reed <reed@google.com>
Cr-Commit-Position: refs/heads/master@{#800425}

third_party/blink/renderer/platform/graphics/picture_snapshot.cc

@@ -68,8 +68,8 @@ scoped_refptr<PictureSnapshot> PictureSnapshot::Load(
   if (tiles.size() == 1)
     return base::AdoptRef(new PictureSnapshot(std::move(pictures[0])));
   SkPictureRecorder recorder;
-  SkCanvas* canvas = recorder.beginRecording(union_rect.Width(),
-                                             union_rect.Height(), nullptr, 0);
+  SkCanvas* canvas =
+      recorder.beginRecording(union_rect.Width(), union_rect.Height());
   for (size_t i = 0; i < pictures.size(); ++i) {
     canvas->save();
     canvas->translate(tiles[i]->layer_offset.X() - union_rect.X(),