Add parsing for type aliases

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 336 matching lines @@
     typedef v8::internal::Expression* Expression;
     typedef Yield* YieldExpression;
     typedef v8::internal::FunctionLiteral* FunctionLiteral;
     typedef v8::internal::ClassLiteral* ClassLiteral;
     typedef v8::internal::Literal* Literal;
     typedef ObjectLiteral::Property* ObjectLiteralProperty;
     typedef ZoneList<v8::internal::Expression*>* ExpressionList;
     typedef ZoneList<ObjectLiteral::Property*>* PropertyList;
     typedef ParserFormalParameters::Parameter FormalParameter;
     typedef ParserFormalParameters FormalParameters;
+    typedef v8::internal::Statement* Statement;
     typedef ZoneList<v8::internal::Statement*>* StatementList;
 
     struct TypeSystem {
       typedef v8::internal::typesystem::Type* Type;
       typedef ZoneList<v8::internal::typesystem::Type*>* TypeList;
       typedef v8::internal::typesystem::TypeParameter* TypeParameter;
       typedef ZoneList<v8::internal::typesystem::TypeParameter*>*
           TypeParameters;
       typedef v8::internal::typesystem::FormalParameter* FormalParameter;
       typedef ZoneList<v8::internal::typesystem::FormalParameter*>*
@@ skipping 953 matching lines @@
 
 DoExpression* ParserTraits::ParseDoExpression(bool* ok) {
   return parser_->ParseDoExpression(ok);
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_PARSING_PARSER_H_