Add an argument to handleFunctionBodySkipped.

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

Index: pkg/front_end/lib/src/fasta/source/outline_builder.dart
diff --git a/pkg/front_end/lib/src/fasta/source/outline_builder.dart b/pkg/front_end/lib/src/fasta/source/outline_builder.dart
index 5be03bde2ae562c4ea6271562da9202b52871ed4..31492325412ac0d031eddca02206ef5fec01ab46 100644
--- a/pkg/front_end/lib/src/fasta/source/outline_builder.dart
+++ b/pkg/front_end/lib/src/fasta/source/outline_builder.dart
@@ -274,7 +274,7 @@ class OutlineBuilder extends UnhandledListener {
   }
 
   @override
-  void handleFunctionBodySkipped(Token token) {
+  void handleFunctionBodySkipped(Token token, bool isExpressionBody) {
     debugEvent("handleFunctionBodySkipped");
     push(MethodBody.Regular);
   }