Classes: Fix issue with default constructor crash

src/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_PARSER_H_
 #define V8_PARSER_H_
 
 #include "src/allocation.h"
 #include "src/ast.h"
 #include "src/compiler.h"  // For CachedDataMode
@@ skipping 529 matching lines @@
                              AstNodeFactory<AstConstructionVisitor>* factory,
                              int pos = RelocInfo::kNoPosition);
   Expression* SuperReference(Scope* scope,
                              AstNodeFactory<AstConstructionVisitor>* factory,
                              int pos = RelocInfo::kNoPosition);
   Expression* ClassExpression(const AstRawString* name, Expression* extends,
                               Expression* constructor,
                               ZoneList<ObjectLiteral::Property*>* properties,
                               int start_position, int end_position,
                               AstNodeFactory<AstConstructionVisitor>* factory);
-
+  Expression* DefaultConstructor(
+      bool call_super, Scope* scope,
+      AstNodeFactory<AstConstructionVisitor>* factory);
   Literal* ExpressionFromLiteral(
       Token::Value token, int pos, Scanner* scanner,
       AstNodeFactory<AstConstructionVisitor>* factory);
   Expression* ExpressionFromIdentifier(
       const AstRawString* name, int pos, Scope* scope,
       AstNodeFactory<AstConstructionVisitor>* factory);
   Expression* ExpressionFromString(
       int pos, Scanner* scanner,
       AstNodeFactory<AstConstructionVisitor>* factory);
   Expression* GetIterator(Expression* iterable,
@@ skipping 357 matching lines @@
  private:
   static const int kLiteralTypeSlot = 0;
   static const int kElementsSlot = 1;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(CompileTimeValue);
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_PARSER_H_