Don't use Isolate::Current for AST debugging.

src/ast/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_AST_H_
 #define V8_AST_AST_H_
 
 #include "src/assembler.h"
 #include "src/ast/ast-value-factory.h"
 #include "src/ast/modules.h"
@@ skipping 180 matching lines @@
 
   explicit AstNode(int position): position_(position) {}
   virtual ~AstNode() {}
 
   virtual void Accept(AstVisitor* v) = 0;
   virtual NodeType node_type() const = 0;
   int position() const { return position_; }
 
 #ifdef DEBUG
   void PrettyPrint(Isolate* isolate);
-  void PrettyPrint();
   void Print(Isolate* isolate);
-  void Print();
 #endif  // DEBUG
 
   // Type testing & conversion functions overridden by concrete subclasses.
 #define DECLARE_NODE_FUNCTIONS(type) \
   V8_INLINE bool Is##type() const;   \
   V8_INLINE type* As##type();        \
   V8_INLINE const type* As##type() const;
   AST_NODE_LIST(DECLARE_NODE_FUNCTIONS)
 #undef DECLARE_NODE_FUNCTIONS
 
@@ skipping 3340 matching lines @@
                                     : NULL;                                   \
   }
 AST_NODE_LIST(DECLARE_NODE_FUNCTIONS)
 #undef DECLARE_NODE_FUNCTIONS
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_AST_AST_H_