Prepare for development branch by updating externally-used API.

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/errors.dart' show internalError;
+import 'package:front_end/src/fasta/fasta_codes.dart' show FastaMessage;
 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/source/stack_listener.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)
       : metadata = metadata ?? const [];
 }
@@ skipping 27 matching lines @@
   ClassMember(Comment documentationComment, List<Annotation> metadata)
       : super(documentationComment, metadata);
 }
 
 /// "Mini AST" representation of a comment.
 class Comment {
   final bool isDocumentation;
 
   final List<Token> tokens;
 
-  factory Comment(analyzer.Token commentToken) {
+  factory Comment(Token commentToken) {
     var tokens = <Token>[];
     bool isDocumentation = false;
     while (commentToken != null) {
       if (commentToken.lexeme.startsWith('/**') ||
           commentToken.lexeme.startsWith('///')) {
         isDocumentation = true;
       }
       tokens.add(commentToken);
       commentToken = commentToken.next;
     }
@@ skipping 357 matching lines @@
     push('$prefix.$suffix');
   }
 
   @override
   void handleType(Token beginToken, Token endToken) {
     debugEvent("Type");
     List<TypeName> typeArguments = pop();
     String name = pop();
     push(new TypeName(name, typeArguments));
   }
+
+  @override
+  void addCompileTimeErrorFromMessage(FastaMessage message) {
+    internalError(message.message);
+  }
 }
 
 /// Parser intended for use with [MiniAstBuilder].
 class MiniAstParser extends Parser {
   MiniAstParser(MiniAstBuilder listener) : super(listener);
 
   Token parseArgumentsOpt(Token token) {
     MiniAstBuilder listener = this.listener;
     if (listener.inMetadata) {
       return super.parseArgumentsOpt(token);
@@ skipping 19 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 {}