[heap] Remove obsolete DisallowAllocationFailure scope.

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 36e56a0aba75e8e8e50b558d549885210c23d028..dbb3e95866f9426fed6e213ad9df7c8a855bcb5f 100644
--- a/src/heap/heap-inl.h
+++ b/src/heap/heap-inl.h
@@ -198,7 +198,7 @@ AllocationResult Heap::AllocateRaw(int size_in_bytes, AllocationSpace space,
   DCHECK(AllowHeapAllocation::IsAllowed());
   DCHECK(gc_state_ == NOT_IN_GC);
 #ifdef DEBUG
-  if (FLAG_gc_interval >= 0 && AllowAllocationFailure::IsAllowed(isolate_) &&
+  if (FLAG_gc_interval >= 0 && !always_allocate() &&
       Heap::allocation_timeout_-- <= 0) {
     return AllocationResult::Retry(space);
   }
@@ -748,7 +748,7 @@ void Heap::SetSetterStubDeoptPCOffset(int pc_offset) {
 
 
 AlwaysAllocateScope::AlwaysAllocateScope(Isolate* isolate)
-    : heap_(isolate->heap()), daf_(isolate) {
+    : heap_(isolate->heap()) {
   heap_->always_allocate_scope_count_.Increment(1);
 }