Re-introduce ImportDeclaration to the parser

src/parser.h

Index: src/parser.h
diff --git a/src/parser.h b/src/parser.h
index a10a18e749e5d068f81ce7e7ea58bb12836b51d9..4ee0e6c28adedadd80bd15791e76394d749113de 100644
--- a/src/parser.h
+++ b/src/parser.h
@@ -706,7 +706,7 @@ class Parser : public ParserBase<ParserTraits> {
   Statement* ParseStatementListItem(bool* ok);
   void* ParseModule(ZoneList<Statement*>* body, bool* ok);
   Statement* ParseModuleItem(bool* ok);
-  Literal* ParseModuleSpecifier(bool* ok);
+  const AstRawString* ParseModuleSpecifier(bool* ok);
   Statement* ParseImportDeclaration(bool* ok);
   Statement* ParseExportDeclaration(bool* ok);
   Statement* ParseExportDefault(bool* ok);
@@ -714,8 +714,7 @@ class Parser : public ParserBase<ParserTraits> {
                           ZoneList<Scanner::Location>* export_locations,
                           ZoneList<const AstRawString*>* local_names,
                           Scanner::Location* reserved_loc, bool* ok);
-  void* ParseNamedImports(ZoneList<const AstRawString*>* import_names,
-                          ZoneList<const AstRawString*>* local_names, bool* ok);
+  ZoneList<ImportDeclaration*>* ParseNamedImports(int pos, bool* ok);
   Statement* ParseStatement(ZoneList<const AstRawString*>* labels, bool* ok);
   Statement* ParseSubStatement(ZoneList<const AstRawString*>* labels, bool* ok);
   Statement* ParseFunctionDeclaration(ZoneList<const AstRawString*>* names,