Respect old space allocation limit in PagedSpace::AllocateRaw.

src/heap/heap-inl.h

Index: src/heap/heap-inl.h
diff --git a/src/heap/heap-inl.h b/src/heap/heap-inl.h
index 7e869f263a1be6e6f0ead788bf2ee42f4a3bccc0..f2c593e7f87da03fe1bad50cf6fcf65c796f769a 100644
--- a/src/heap/heap-inl.h
+++ b/src/heap/heap-inl.h
@@ -698,18 +698,12 @@ void Heap::CompletelyClearInstanceofCache() {
 
 AlwaysAllocateScope::AlwaysAllocateScope(Isolate* isolate)
     : heap_(isolate->heap()), daf_(isolate) {
-  // We shouldn't hit any nested scopes, because that requires
-  // non-handle code to call handle code. The code still works but
-  // performance will degrade, so we want to catch this situation
-  // in debug mode.
-  DCHECK(heap_->always_allocate_scope_depth_ == 0);
   heap_->always_allocate_scope_depth_++;
 }
 
 
 AlwaysAllocateScope::~AlwaysAllocateScope() {
   heap_->always_allocate_scope_depth_--;
-  DCHECK(heap_->always_allocate_scope_depth_ == 0);
 }