Flush pending writes on Skia scratch textures used in Chromium

media/blink/skcanvas_video_renderer.cc

Index: media/blink/skcanvas_video_renderer.cc
diff --git a/media/blink/skcanvas_video_renderer.cc b/media/blink/skcanvas_video_renderer.cc
index 51168fb0886354cb87f62bf4055ec2a1f814c618..39335f77d3de603292829c5cd73373275165f5be 100644
--- a/media/blink/skcanvas_video_renderer.cc
+++ b/media/blink/skcanvas_video_renderer.cc
@@ -79,6 +79,11 @@ bool AllocateSkBitmapTexture(GrContext* gr,
   if (!texture.get())
     return false;
 
+  // A recycled texture may have pending writes. Make sure they are flushed
+  // before the texture is handed over for subsequent operations done outside
+  // of Skia.
+  texture->flushWrites();
+
   SkImageInfo info = SkImageInfo::MakeN32Premul(desc.fWidth, desc.fHeight);
   SkGrPixelRef* pixel_ref = SkNEW_ARGS(SkGrPixelRef, (info, texture.get()));
   if (!pixel_ref)