Add threaded backend sink to DM. Fix a scheduler bug.

The bug is spotted by the new sink. I'd expect more bugs to be revealed
and fixed using the new sink.

Bug: skia:
Change-Id: I6b0c9267079fbd6149004f0ecd55ddb179702588
Reviewed-on: https://skia-review.googlesource.com/109720
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Yuqian Li <liyuqian@google.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/dm/DM.cpp b/dm/DM.cpp
index ef35e2cd02..1d3d815647 100644
--- a/dm/DM.cpp
+++ b/dm/DM.cpp
@@ -917,6 +917,7 @@ static Sink* create_sink(const GrContextOptions& grCtxOptions, const SkCommandLi
         SINK("1010102", RasterSink, kRGBA_1010102_SkColorType);
         SINK("101010x", RasterSink, kRGB_101010x_SkColorType);
         SINK("f16",     RasterSink, kRGBA_F16_SkColorType, srgbLinearColorSpace);
+        SINK("t8888",   ThreadedSink, kN32_SkColorType);
         SINK("pdf",     PDFSink, false, SK_ScalarDefaultRasterDPI);
         SINK("skp",     SKPSink);
         SINK("pipe",    PipeSink);