rename fasta.Token.value --> lexeme

pkg/compiler/tool/perf.dart

 // Copyright (c) 2016, 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.
 
 /// An entrypoint used to run portions of dart2js and measure its performance.
 library compiler.tool.perf;
 
 import 'dart:async';
 import 'dart:io';
 
@@ skipping 191 matching lines @@
   void exitDirective() {
     inDirective = false;
   }
 
   void beginImport(Token importKeyword) => enterDirective();
   void beginExport(Token token) => enterDirective();
   void beginPart(Token token) => enterDirective();
 
   void beginLiteralString(Token token) {
     if (inDirective) {
-      var quotedString = token.value;
+      var quotedString = token.lexeme;
       targets.add(quotedString.substring(1, quotedString.length - 1));
     }
   }
 
   void endExport(Token exportKeyword, Token semicolon) => exitDirective();
   void endImport(Token importKeyword, Token deferredKeyword, Token asKeyword,
           Token semicolon) =>
       exitDirective();
   void endPart(Token partKeyword, Token semicolon) => exitDirective();
 }
@@ skipping 156 matching lines @@
           // TODO(sigmund): more diagnostics?
           print('compilation failed!');
           exit(1);
         }
 
         closeResolution();
         var program = (backend as dynamic).kernelTask.program;
         print('total libraries: ${program.libraries.length}');
       });
 }