Add a mode to completely deserialize scope chains

src/parsing/parser.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_PARSING_PARSER_H_
 #define V8_PARSING_PARSER_H_
 
 #include "src/allocation.h"
 #include "src/ast/ast.h"
 #include "src/ast/scopes.h"
@@ skipping 704 matching lines @@
   // nodes) if parsing failed.
   static bool ParseStatic(ParseInfo* info);
   bool Parse(ParseInfo* info);
   void ParseOnBackground(ParseInfo* info);
 
   // Handle errors detected during parsing, move statistics to Isolate,
   // internalize strings (move them to the heap).
   void Internalize(Isolate* isolate, Handle<Script> script, bool error);
   void HandleSourceURLComments(Isolate* isolate, Handle<Script> script);
 
+  void set_original_scope(Scope* original_scope) {
+    original_scope_ = original_scope;
+  }
+
  private:
   friend class ParserTraits;
   friend class DiscardableZoneScope;
 
   // Runtime encoding of different completion modes.
   enum CompletionKind {
     kNormalCompletion,
     kThrowCompletion,
     kAbruptCompletion
   };
@@ skipping 588 matching lines @@
 
 DoExpression* ParserTraits::ParseDoExpression(bool* ok) {
   return parser_->ParseDoExpression(ok);
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_PARSING_PARSER_H_