[Paint Preview] Remove paint recording flag usage in composition codepath

Change-Id: Id3868d6e9fd854a0c7fd34868101227dd6adb540
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2363362
Commit-Queue: Michael Tang <tangm@microsoft.com>
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Mike Reed <reed@google.com>
Reviewed-by: Calder Kitagawa <ckitagawa@chromium.org>
Cr-Commit-Position: refs/heads/master@{#799872}

components/paint_preview/common/serial_utils.cc

@@ -111,8 +111,7 @@ sk_sp<SkPicture> GetPictureFromDeserialContext(const void* data,
       -context->scroll_offsets.width() - it->second.scroll_offsets.width(),
       -context->scroll_offsets.height() - it->second.scroll_offsets.height());
   canvas->drawPicture(it->second.picture, &apply_scroll_offsets, nullptr);
-  return recorder.finishRecordingAsPicture(
-      SkPictureRecorder::kPlaybackDrawPicture_RecordFlag);
+  return recorder.finishRecordingAsPicture();
 }
 
 }  // namespace