Remove use of unsupported Skia flag

cc/raster/gpu_raster_buffer_provider.cc

Index: cc/raster/gpu_raster_buffer_provider.cc
diff --git a/cc/raster/gpu_raster_buffer_provider.cc b/cc/raster/gpu_raster_buffer_provider.cc
index adeddbd718b01add7e3261e62059ba7a6f645fd2..6c1d7b7ed8feb8d0f2a991aaa0bfe54c0f8a012c 100644
--- a/cc/raster/gpu_raster_buffer_provider.cc
+++ b/cc/raster/gpu_raster_buffer_provider.cc
@@ -59,9 +59,8 @@ static sk_sp<SkPicture> PlaybackToPicture(
 
   // Play back raster_source into temp SkPicture.
   SkPictureRecorder recorder;
-  const int flags = SkPictureRecorder::kComputeSaveLayerInfo_RecordFlag;
-  sk_sp<SkCanvas> canvas = sk_ref_sp(recorder.beginRecording(
-      resource_size.width(), resource_size.height(), NULL, flags));
+  sk_sp<SkCanvas> canvas = sk_ref_sp(
+      recorder.beginRecording(resource_size.width(), resource_size.height()));
   canvas->save();
   raster_source->PlaybackToCanvas(canvas.get(), raster_full_rect, playback_rect,
                                   scale, playback_settings);