Adjust placement of non-compaction checks.

third_party/WebKit/Source/platform/heap/MarkingVisitorImpl.h

Index: third_party/WebKit/Source/platform/heap/MarkingVisitorImpl.h
diff --git a/third_party/WebKit/Source/platform/heap/MarkingVisitorImpl.h b/third_party/WebKit/Source/platform/heap/MarkingVisitorImpl.h
index 4b2f56586ef2a20ed9dcb64dc4c2de7709f10298..877fbfd7e81b35adc97513ad3799633b2ff3823c 100644
--- a/third_party/WebKit/Source/platform/heap/MarkingVisitorImpl.h
+++ b/third_party/WebKit/Source/platform/heap/MarkingVisitorImpl.h
@@ -87,18 +87,16 @@ class MarkingVisitorImpl {
 #endif
 
   inline void registerMovingObjectReference(MovableReference* slot) {
-    if (toDerived()->getMarkingMode() !=
-        VisitorMarkingMode::GlobalMarkingWithCompaction)
-      return;
+    DCHECK(toDerived()->getMarkingMode() ==
+           VisitorMarkingMode::GlobalMarkingWithCompaction);
     toDerived()->heap().registerMovingObjectReference(slot);
   }
 
   inline void registerMovingObjectCallback(MovableReference reference,
                                            MovingObjectCallback callback,
                                            void* callbackData) {
-    if (toDerived()->getMarkingMode() !=
-        VisitorMarkingMode::GlobalMarkingWithCompaction)
-      return;
+    DCHECK(toDerived()->getMarkingMode() ==
+           VisitorMarkingMode::GlobalMarkingWithCompaction);
     toDerived()->heap().registerMovingObjectCallback(reference, callback,
                                                      callbackData);
   }