Treat pointers in optimized code as strong before all weak dependencies are registered.

src/heap/heap.h

Index: src/heap/heap.h
diff --git a/src/heap/heap.h b/src/heap/heap.h
index 5fc3f07d75f54e406ecaa4ac5171d453b8c14f04..2ae4165b9965cf4892cbf92be5daf1bf2dfdc271 100644
--- a/src/heap/heap.h
+++ b/src/heap/heap.h
@@ -2133,9 +2133,6 @@ class Heap {
   friend class MarkCompactCollector;
   friend class MarkCompactMarkingVisitor;
   friend class MapCompact;
-#ifdef VERIFY_HEAP
-  friend class NoWeakObjectVerificationScope;
-#endif
   friend class Page;
 
   DISALLOW_COPY_AND_ASSIGN(Heap);
@@ -2189,15 +2186,6 @@ class AlwaysAllocateScope {
 };
 
 
-#ifdef VERIFY_HEAP
-class NoWeakObjectVerificationScope {
- public:
-  inline NoWeakObjectVerificationScope();
-  inline ~NoWeakObjectVerificationScope();
-};
-#endif
-
-
 class GCCallbacksScope {
  public:
   explicit inline GCCallbacksScope(Heap* heap);