call derived ~ from GrIORef

TBR=mtklein@google.com
NOTREECHECKS=true

Review URL: https://codereview.chromium.org/641813002

diff --git a/include/gpu/GrGpuResource.h b/include/gpu/GrGpuResource.h
index 666ab0d..00a5035 100644 (file)
--- a/include/gpu/GrGpuResource.h
+++ b/include/gpu/GrGpuResource.h
@@ -103,7 +103,8 @@ private:
     void didUnref() const {
         if (0 == fPendingReads && 0 == fPendingWrites) {
             if (0 == fRefCnt) {
-                SkDELETE(this);
+                // Must call derived destructor since this is not a virtual class.
+                SkDELETE(static_cast<const DERIVED*>(this));
             } else if (1 == fRefCnt) {
                 // The one ref is the cache's
                 static_cast<const DERIVED*>(this)->notifyIsPurgable();