[heap] Enfoce tighter allocation limit for large object allocations.

src/heap/heap.h

Index: src/heap/heap.h
diff --git a/src/heap/heap.h b/src/heap/heap.h
index 0a90c8f7da5d7887375a607041c0bfcb5d8d59f1..47535e1b589a087f7579c7c22d82ffa728a2ef42 100644
--- a/src/heap/heap.h
+++ b/src/heap/heap.h
@@ -822,7 +822,7 @@ class Heap {
 
   // TODO(hpayer): There is still a missmatch between capacity and actual
   // committed memory size.
-  bool CanExpandOldGeneration(int size) {
+  bool CanExpandOldGeneration(int size = 0) {
     if (force_oom_) return false;
     return (CommittedOldGenerationMemory() + size) < MaxOldGenerationSize();
   }