Prepare to enable explicit gpu resource allocation

Change-Id: I407e45711c61831febbac3d3d3a88e3fdde92c5f
Reviewed-on: https://skia-review.googlesource.com/68212
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/private/GrSurfaceProxy.h b/include/private/GrSurfaceProxy.h
index 0eccdce32c..23f62195c2 100644
--- a/include/private/GrSurfaceProxy.h
+++ b/include/private/GrSurfaceProxy.h
@@ -130,6 +130,7 @@ protected:
     void transferRefs() {
         SkASSERT(fTarget);
 
+        SkASSERT(fTarget->fRefCnt > 0);
         fTarget->fRefCnt += (fRefCnt-1); // don't xfer the proxy's creation ref
         fTarget->fPendingReads += fPendingReads;
         fTarget->fPendingWrites += fPendingWrites;