Add propagated types to summary files.

pkg/analyzer/lib/src/summary/prelink.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.
 
 import 'package:analyzer/src/summary/format.dart';
 import 'package:analyzer/src/summary/name_filter.dart';
 
 /**
  * Create a [LinkedLibraryBuilder] corresponding to the given
  * [definingUnit], which should be the defining compilation unit for a library.
@@ skipping 417 matching lines @@
     List<int> importDependencies =
         definingUnit.imports.map(handleImport).toList();
 
     // Link each compilation unit.
     List<LinkedUnitBuilder> linkedUnits = units.map(linkUnit).toList();
 
     return new LinkedLibraryBuilder(
         units: linkedUnits,
         dependencies: dependencies,
         importDependencies: importDependencies,
-        exportNames: exportNames);
+        exportNames: exportNames,
+        numPrelinkedDependencies: dependencies.length);
   }
 
   /**
    * Resolve [relativeUri] relative to [sourceUri].  Works correctly if
    * [sourceUri] is also relative.
    */
   String resolveUri(String sourceUri, String relativeUri) {
     if (sourceUri == null) {
       return relativeUri;
     } else {
       return Uri.parse(sourceUri).resolve(relativeUri).toString();
     }
   }
 }