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pkg/front_end/lib/src/fasta/source/diet_listener.dart

Index: pkg/front_end/lib/src/fasta/source/diet_listener.dart
diff --git a/pkg/front_end/lib/src/fasta/source/diet_listener.dart b/pkg/front_end/lib/src/fasta/source/diet_listener.dart
index ee46b5b1861fc5f6a2959a4f6625f3efa2aa8cce..c43900e5dc1e0f3db8a4dafeb97af217b0efb0ea 100644
--- a/pkg/front_end/lib/src/fasta/source/diet_listener.dart
+++ b/pkg/front_end/lib/src/fasta/source/diet_listener.dart
@@ -45,7 +45,7 @@ class DietListener extends StackListener {
 
   final CoreTypes coreTypes;
 
-  final bool isDartLibrary;
+  final bool enableNative;
 
   final TypeInferenceEngine typeInferenceEngine;
 
@@ -63,7 +63,7 @@ class DietListener extends StackListener {
       : library = library,
         uri = library.fileUri,
         memberScope = library.scope,
-        isDartLibrary = library.uri.scheme == "dart";
+        enableNative = (library.uri.scheme == "dart" || library.isPatch);
 
   void discard(int n) {
     for (int i = 0; i < n; i++) {
@@ -487,7 +487,7 @@ class DietListener extends StackListener {
 
   @override
   Token handleUnrecoverableError(Token token, FastaMessage message) {
-    if (isDartLibrary && message.code == codeExpectedBlockToSkip) {
+    if (enableNative && message.code == codeExpectedBlockToSkip) {
       Token recover = library.loader.target.skipNativeClause(token);
       if (recover != null) return recover;
     }
@@ -496,7 +496,7 @@ class DietListener extends StackListener {
 
   @override
   Link<Token> handleMemberName(Link<Token> identifiers) {
-    if (!isDartLibrary || identifiers.isEmpty) return identifiers;
+    if (!enableNative || identifiers.isEmpty) return identifiers;
     return removeNativeClause(identifiers);
   }