Remove Ops whose lazy proxies fail to instantiate on flush

Bug: skia:
Change-Id: If8b5b9e5d0c306be28ba192b731d34d185427354
Reviewed-on: https://skia-review.googlesource.com/99440
Commit-Queue: Greg Daniel <egdaniel@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
diff --git a/src/gpu/GrRenderTargetOpList.h b/src/gpu/GrRenderTargetOpList.h
index 6b73633..6bbd1cb 100644
--- a/src/gpu/GrRenderTargetOpList.h
+++ b/src/gpu/GrRenderTargetOpList.h
@@ -143,6 +143,8 @@
         GrAppliedClip* fAppliedClip;
     };
 
+    void purgeOpsWithUninstantiatedProxies() override;
+
     void gatherProxyIntervals(GrResourceAllocator*) const override;
 
     void recordOp(std::unique_ptr<GrOp>, const GrCaps& caps,