update fasta scanner to generate two types of comments

pkg/analyzer/lib/src/fasta/token_utils.dart

Index: pkg/analyzer/lib/src/fasta/token_utils.dart
diff --git a/pkg/analyzer/lib/src/fasta/token_utils.dart b/pkg/analyzer/lib/src/fasta/token_utils.dart
index fe0cc065bf01e5e455029353edce60d315f713ca..ccae03deb14bf562e5a0b1243418745dc7a46fec 100644
--- a/pkg/analyzer/lib/src/fasta/token_utils.dart
+++ b/pkg/analyzer/lib/src/fasta/token_utils.dart
@@ -350,10 +350,10 @@ Token fromAnalyzerToken(analyzer.Token token) {
       }
       break;
     case TokenType.MULTI_LINE_COMMENT:
-      return string(COMMENT_INFO);
+      return string(MULTI_LINE_COMMENT_INFO);
     // case TokenType.SCRIPT_TAG
     case TokenType.SINGLE_LINE_COMMENT:
-      return string(COMMENT_INFO);
+      return string(SINGLE_LINE_COMMENT_INFO);
     case TokenType.STRING:
       return string(STRING_INFO);
     case TokenType.AMPERSAND: