Add file identifiers to summaries.

pkg/analyzer/tool/summary/idl_model.dart

 // Copyright (c) 2015, 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.
 
 /**
  * This file contains a set of concrete classes representing an in-memory
  * semantic model of the IDL used to code generate summary serialization and
  * deserialization code.
  */
 library analyzer.tool.summary.idl_model;
 
 /**
  * Information about a single class defined in the IDL.
  */
 class ClassDeclaration extends Declaration {
   /**
    * Fields defined in the class.
    */
   final List<FieldDeclaration> fields = <FieldDeclaration>[];
 
   /**
    * Indicates whether the class has the `topLevel` annotation.
    */
   final bool isTopLevel;
 
-  ClassDeclaration(String documentation, String name, this.isTopLevel)
+  /**
+   * If [isTopLevel] is `true` and a file identifier was specified for this
+   * class, the file identifier string.  Otheswise `null`.
+   */
+  final String fileIdentifier;
+
+  ClassDeclaration(
+      String documentation, String name, this.isTopLevel, this.fileIdentifier)
       : super(documentation, name);
 }
 
 /**
  * Information about a declaration in the IDL.
  */
 class Declaration {
   /**
    * The optional documentation, may be `null`.
    */
@@ skipping 71 matching lines @@
   /**
    * Classes defined in the IDL.
    */
   final Map<String, ClassDeclaration> classes = <String, ClassDeclaration>{};
 
   /**
    * Enums defined in the IDL.
    */
   final Map<String, EnumDeclaration> enums = <String, EnumDeclaration>{};
 }