Make server use the common protocol classes

pkg/analysis_server/tool/spec/api.dart

 // Copyright (c) 2014, 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.
 
 /**
  * Data structures representing an API definition, and visitor base classes
  * for visiting those data structures.
  */
 import 'dart:collection';
 
@@ skipping 340 matching lines @@
   accept(ApiVisitor visitor);
 }
 
 /**
  * Description of a named type definition.
  */
 class TypeDefinition extends ApiNode {
   final String name;
   final TypeDecl type;
 
+  bool isExternal = false;
+
   TypeDefinition(this.name, this.type, dom.Element html,
       {bool experimental, bool deprecated})
       : super(html, experimental, deprecated);
 }
 
 /**
  * Type of an enum.  We represent enums in JSON as strings, so this type
  * declaration simply lists the allowed values.
  */
 class TypeEnum extends TypeDecl {
@@ skipping 114 matching lines @@
   @override
   accept(ApiVisitor visitor) => visitor.visitTypeReference(this);
 }
 
 /**
  * A collection of type definitions.
  */
 class Types extends ApiNode with IterableMixin<TypeDefinition> {
   final Map<String, TypeDefinition> types;
 
+  List<String> importUris = <String>[];
+
   Types(this.types, dom.Element html, {bool experimental})
       : super(html, experimental, false);
 
   @override
   Iterator<TypeDefinition> get iterator => types.values.iterator;
 
   Iterable<String> get keys => types.keys;
 
   TypeDefinition operator [](String typeName) => types[typeName];
 
@@ skipping 10 matching lines @@
    * The field that is used to disambiguate this union
    */
   final String field;
 
   TypeUnion(this.choices, this.field, dom.Element html, {bool experimental})
       : super(html, experimental, false);
 
   @override
   accept(ApiVisitor visitor) => visitor.visitTypeUnion(this);
 }