--- old/src/hotspot/share/gc/g1/g1CollectedHeap.hpp	2017-09-25 13:06:19.344450544 -0400
+++ new/src/hotspot/share/gc/g1/g1CollectedHeap.hpp	2017-09-25 13:06:18.799803056 -0400
@@ -63,7 +63,6 @@
 class GenerationSpec;
 class G1ParScanThreadState;
 class G1ParScanThreadStateSet;
-class G1KlassScanClosure;
 class G1ParScanThreadState;
 class ObjectClosure;
 class SpaceClosure;