Revert "Introduces `ParserOptions`."

pkg/compiler/lib/src/parser/partial_parser.dart

Index: pkg/compiler/lib/src/parser/partial_parser.dart
diff --git a/pkg/compiler/lib/src/parser/partial_parser.dart b/pkg/compiler/lib/src/parser/partial_parser.dart
index 355ddd8cc7066b458dfed967303c739a430073e2..1c7722f881d7c82c9baf3f9101a8b717169a071e 100644
--- a/pkg/compiler/lib/src/parser/partial_parser.dart
+++ b/pkg/compiler/lib/src/parser/partial_parser.dart
@@ -5,8 +5,6 @@
 library dart2js.parser.partial;
 
 import '../common.dart';
-import '../options.dart' show
-    ParserOptions;
 import '../util/characters.dart' as Characters show
     $CLOSE_CURLY_BRACKET;
 import '../tokens/token.dart' show
@@ -22,8 +20,9 @@ import 'parser.dart' show
     Parser;
 
 class PartialParser extends Parser {
-  PartialParser(Listener listener, ParserOptions options)
-      : super(listener, options);
+  PartialParser(Listener listener, {bool enableConditionalDirectives})
+      : super(listener,
+          enableConditionalDirectives: enableConditionalDirectives);
 
   Token parseClassBody(Token token) => skipClassBody(token);