merge fasta.PrecedenceInfo into analyzer.TokenType

pkg/front_end/lib/src/fasta/scanner/utf8_bytes_scanner.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library fasta.scanner.utf8_bytes_scanner;
 
 import 'dart:convert' show UNICODE_BOM_CHARACTER_RUNE, UTF8;
 
+import '../../scanner/token.dart' show TokenType;
+
 import '../scanner.dart' show unicodeReplacementCharacter;
 
-import 'precedence.dart' show PrecedenceInfo;
-
 import 'token.dart' show CommentToken, DartDocToken, StringToken;
 
 import 'array_based_scanner.dart' show ArrayBasedScanner;
 
 /**
  * Scanner that reads from a UTF-8 encoded list of bytes and creates tokens
  * that points to substrings.
  */
 class Utf8BytesScanner extends ArrayBasedScanner {
   /**
@@ skipping 166 matching lines @@
 
   int get stringOffset {
     if (stringOffsetSlackOffset == byteOffset) {
       return byteOffset - utf8Slack - 1;
     } else {
       return byteOffset - utf8Slack;
     }
   }
 
   @override
-  StringToken createSubstringToken(
-      PrecedenceInfo info, int start, bool asciiOnly,
+  StringToken createSubstringToken(TokenType info, int start, bool asciiOnly,
       [int extraOffset = 0]) {
     return new StringToken.fromUtf8Bytes(
         info, bytes, start, byteOffset + extraOffset, asciiOnly, tokenStart);
   }
 
   @override
-  CommentToken createCommentToken(
-      PrecedenceInfo info, int start, bool asciiOnly,
+  CommentToken createCommentToken(TokenType info, int start, bool asciiOnly,
       [int extraOffset = 0]) {
     return new CommentToken.fromUtf8Bytes(
         info, bytes, start, byteOffset + extraOffset, asciiOnly, tokenStart);
   }
 
   @override
-  DartDocToken createDartDocToken(
-      PrecedenceInfo info, int start, bool asciiOnly,
+  DartDocToken createDartDocToken(TokenType info, int start, bool asciiOnly,
       [int extraOffset = 0]) {
     return new DartDocToken.fromUtf8Bytes(
         info, bytes, start, byteOffset + extraOffset, asciiOnly, tokenStart);
   }
 
   bool atEndOfFile() => byteOffset >= bytes.length - 1;
 }