Fix logic for doing incremental marking steps on tenured allocation.

src/heap/spaces.h

Index: src/heap/spaces.h
diff --git a/src/heap/spaces.h b/src/heap/spaces.h
index 0272d59944149009fe3c01a6941052520772a1ec..2f90dbc9d4412bc0695a529b4760fd8e0ad49e3f 100644
--- a/src/heap/spaces.h
+++ b/src/heap/spaces.h
@@ -1779,13 +1779,7 @@ class PagedSpace : public Space {
   void ResetFreeList() { free_list_.Reset(); }
 
   // Set space allocation info.
-  void SetTopAndLimit(Address top, Address limit) {
-    DCHECK(top == limit ||
-           Page::FromAddress(top) == Page::FromAddress(limit - 1));
-    MemoryChunk::UpdateHighWaterMark(allocation_info_.top());
-    allocation_info_.set_top(top);
-    allocation_info_.set_limit(limit);
-  }
+  void SetTopAndLimit(Address top, Address limit);
 
   // Empty space allocation info, returning unused area to free list.
   void EmptyAllocationInfo() {