AST extensions and parsing for import & export declarations.

src/rewriter.cc

Index: src/rewriter.cc
diff --git a/src/rewriter.cc b/src/rewriter.cc
index a92c3c3ae278b977f0263eea9376d8574f3bbd34..55f93ee0d7165e40d65852671f7d92a4e0c99b47 100644
--- a/src/rewriter.cc
+++ b/src/rewriter.cc
@@ -212,6 +212,8 @@ void Processor::VisitWithStatement(WithStatement* node) {
 void Processor::VisitVariableDeclaration(VariableDeclaration* node) {}
 void Processor::VisitFunctionDeclaration(FunctionDeclaration* node) {}
 void Processor::VisitModuleDeclaration(ModuleDeclaration* node) {}
+void Processor::VisitImportDeclaration(ImportDeclaration* node) {}
+void Processor::VisitExportDeclaration(ExportDeclaration* node) {}
 void Processor::VisitModuleLiteral(ModuleLiteral* node) {}
 void Processor::VisitModuleVariable(ModuleVariable* node) {}
 void Processor::VisitModulePath(ModulePath* node) {}