Remove more uses of the deprecated EnumSet template class.

src/ast-numbering.cc

Index: src/ast-numbering.cc
diff --git a/src/ast-numbering.cc b/src/ast-numbering.cc
index ab8a6b281c45be49576fd85d809195d4a2ec21c6..bf0f9ba2a46f4788b43b3a1af5e48dbe7b781e52 100644
--- a/src/ast-numbering.cc
+++ b/src/ast-numbering.cc
@@ -2,8 +2,6 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "src/v8.h"
-
 #include "src/ast.h"
 #include "src/ast-numbering.h"
 #include "src/scopes.h"
@@ -11,7 +9,6 @@
 namespace v8 {
 namespace internal {
 
-
 class AstNumberingVisitor final : public AstVisitor {
  public:
   explicit AstNumberingVisitor(Isolate* isolate, Zone* zone)
@@ -46,7 +43,7 @@ class AstNumberingVisitor final : public AstVisitor {
 
   void IncrementNodeCount() { properties_.add_node_count(1); }
   void DisableSelfOptimization() {
-    properties_.flags()->Add(kDontSelfOptimize);
+    properties_.flags() |= AstProperties::kDontSelfOptimize;
   }
   void DisableOptimization(BailoutReason reason) {
     dont_optimize_reason_ = reason;
@@ -54,10 +51,11 @@ class AstNumberingVisitor final : public AstVisitor {
   }
   void DisableCrankshaft(BailoutReason reason) {
     if (FLAG_turbo_shipping) {
-      return properties_.flags()->Add(kDontCrankshaft);
+      properties_.flags() |= AstProperties::kDontCrankshaft;
+    } else {
+      dont_optimize_reason_ = reason;
+      DisableSelfOptimization();
     }
-    dont_optimize_reason_ = reason;
-    DisableSelfOptimization();
   }
 
   template <typename Node>