Respect xfer barriers in InstancedRendering::Op

Fixes a bug introduced when this Op stopped storing a GrPipeline.

Change-Id: I1a39814cebe18b321ea369f005bb7759f233cfe6
Reviewed-on: https://skia-review.googlesource.com/10804
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
diff --git a/src/gpu/instanced/InstancedRendering.h b/src/gpu/instanced/InstancedRendering.h
index caff08f..3ec8214 100644
--- a/src/gpu/instanced/InstancedRendering.h
+++ b/src/gpu/instanced/InstancedRendering.h
@@ -153,7 +153,8 @@
         GrProcessorSet fProcessors;
         GrProcessorAnalysisColor fAnalysisColor;
         SkSTArray<5, ParamsTexel, true> fParams;
-        bool fIsTracked;
+        bool fIsTracked : 1;
+        bool fRequiresBarrierOnOverlap : 1;
         int fNumDraws;
         int fNumChangesInGeometry;
         Draw* fHeadDraw;