Update Fasta parser expectations to reflect 5de9108c16f1eeddf4b8a3a47c60eecb55758ee2.

pkg/analyzer/test/generated/parser_fasta_test.dart

Index: pkg/analyzer/test/generated/parser_fasta_test.dart
diff --git a/pkg/analyzer/test/generated/parser_fasta_test.dart b/pkg/analyzer/test/generated/parser_fasta_test.dart
index 1e0353f8d7992916010a6013d602a3e59cc070f4..a3674e23e7ce417c7bf063b1b36b33d685338300 100644
--- a/pkg/analyzer/test/generated/parser_fasta_test.dart
+++ b/pkg/analyzer/test/generated/parser_fasta_test.dart
@@ -979,7 +979,7 @@ class TopLevelParserTest_Fasta extends FastaParserTestCase
   @override
   @failingTest
   void test_parseCompilationUnit_exportAsPrefix() {
-    // TODO(paulberry): TODO(paulberry,ahe): Fasta parser doesn't appear to handle this case correctly.
+    // TODO(paulberry): As of commit 5de9108 this syntax is invalid.
     super.test_parseCompilationUnit_exportAsPrefix();
   }
 
@@ -1007,7 +1007,7 @@ class TopLevelParserTest_Fasta extends FastaParserTestCase
   @override
   @failingTest
   void test_parseCompilationUnit_typedefAsPrefix() {
-    // TODO(paulberry): TODO(paulberry,ahe): Fasta parser doesn't appear to handle this case correctly.
+    // TODO(paulberry): As of commit 5de9108 this syntax is invalid.
     super.test_parseCompilationUnit_typedefAsPrefix();
   }