[presubmit] Enabling readability/inheritance linter checking.

src/heap/spaces.cc

Index: src/heap/spaces.cc
diff --git a/src/heap/spaces.cc b/src/heap/spaces.cc
index 2aa0c21eb6d39692ee824b8a3aa5d682f2dc06e7..6cdc65ced0c2c66fb13d458cf62e31647d085803 100644
--- a/src/heap/spaces.cc
+++ b/src/heap/spaces.cc
@@ -2932,11 +2932,10 @@ void PagedSpace::ReportStatistics() {
 
 // -----------------------------------------------------------------------------
 // MapSpace implementation
-// TODO(mvstanton): this is weird...the compiler can't make a vtable unless
-// there is at least one non-inlined virtual function. I would prefer to hide
-// the VerifyObject definition behind VERIFY_HEAP.
 
+#ifdef VERIFY_HEAP
 void MapSpace::VerifyObject(HeapObject* object) { CHECK(object->IsMap()); }
+#endif
 
 
 // -----------------------------------------------------------------------------