merge fasta.Token into analyzer.Token

pkg/analyzer/tool/summary/mini_ast.dart

 // Copyright (c) 2017, 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.
 
 import 'package:front_end/src/fasta/errors.dart';
 import 'package:front_end/src/fasta/parser/identifier_context.dart';
 import 'package:front_end/src/fasta/parser/parser.dart';
-import 'package:front_end/src/fasta/scanner/token.dart';
+import 'package:front_end/src/scanner/token.dart';
 import 'package:front_end/src/fasta/source/stack_listener.dart';
 import 'package:front_end/src/scanner/token.dart' as analyzer;
 
 /// "Mini AST" representation of a declaration which can accept annotations.
 class AnnotatedNode {
   final Comment documentationComment;
 
   final List<Annotation> metadata;
 
   AnnotatedNode(this.documentationComment, List<Annotation> metadata)
@@ skipping 445 matching lines @@
   final String name;
 
   final List<TypeName> typeArguments;
 
   TypeName(this.name, this.typeArguments);
 }
 
 /// "Mini AST" representation of an expression which summary code generation
 /// need not be concerned about.
 class UnknownExpression extends Expression {}