Small cleanup: AstConstructionVisitor no longer needs a Zone pointer.

src/ast.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_AST_H_
 #define V8_AST_H_
 
 #include "v8.h"
 
 #include "assembler.h"
@@ skipping 2867 matching lines @@
                                                                     \
   Zone* zone_;                                                      \
   bool stack_overflow_
 
 
 // ----------------------------------------------------------------------------
 // Construction time visitor.
 
 class AstConstructionVisitor BASE_EMBEDDED {
  public:
-  explicit AstConstructionVisitor(Zone* zone)
-    : dont_optimize_reason_(kNoReason),
-      zone_(zone) { }
+  AstConstructionVisitor() : dont_optimize_reason_(kNoReason) { }
 
   AstProperties* ast_properties() { return &properties_; }
   BailoutReason dont_optimize_reason() { return dont_optimize_reason_; }
 
  private:
   template<class> friend class AstNodeFactory;
 
   // Node visitors.
 #define DEF_VISIT(type) \
   void Visit##type(type* node);
   AST_NODE_LIST(DEF_VISIT)
 #undef DEF_VISIT
 
   void increase_node_count() { properties_.add_node_count(1); }
   void add_flag(AstPropertiesFlag flag) { properties_.flags()->Add(flag); }
   void set_dont_optimize_reason(BailoutReason reason) {
       dont_optimize_reason_ = reason;
   }
 
   void add_slot_node(FeedbackSlotInterface* slot_node) {
     int count = slot_node->ComputeFeedbackSlotCount();
     if (count > 0) {
       slot_node->SetFirstFeedbackSlot(properties_.feedback_slots());
       properties_.increase_feedback_slots(count);
     }
   }
 
   AstProperties properties_;
   BailoutReason dont_optimize_reason_;
-  Zone* zone_;
 };
 
 
 class AstNullVisitor BASE_EMBEDDED {
  public:
-  explicit AstNullVisitor(Zone* zone) {}
-
   // Node visitors.
 #define DEF_VISIT(type) \
   void Visit##type(type* node) {}
   AST_NODE_LIST(DEF_VISIT)
 #undef DEF_VISIT
 };
 
 
 
 // ----------------------------------------------------------------------------
 // AstNode factory
 
 template<class Visitor>
 class AstNodeFactory V8_FINAL BASE_EMBEDDED {
  public:
-  explicit AstNodeFactory(Zone* zone)
-    : zone_(zone),
-      visitor_(zone) { }
+  explicit AstNodeFactory(Zone* zone) : zone_(zone) { }
 
   Visitor* visitor() { return &visitor_; }
 
 #define VISIT_AND_RETURN(NodeType, node) \
   visitor_.Visit##NodeType((node)); \
   return node;
 
   VariableDeclaration* NewVariableDeclaration(VariableProxy* proxy,
                                               VariableMode mode,
                                               Scope* scope,
@@ skipping 384 matching lines @@
 
  private:
   Zone* zone_;
   Visitor visitor_;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_AST_H_