Keep all type arguments in summaries - dynamic or not.

pkg/analyzer/test/src/summary/summarize_elements_test.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.
 
 library analyzer.test.src.summary.summarize_elements_test;
 
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/src/generated/source.dart';
@@ skipping 33 matching lines @@
    */
   final Map<Source, String> _fileContents = <Source, String>{};
 
   @override
   LinkedLibrary linked;
 
   @override
   List<UnlinkedUnit> unlinkedUnits;
 
   @override
+  bool get elementMode => true;
+
+  @override
   bool get checkAstDerivedData => false;
 
   @override
   bool get expectAbsoluteUrisInDependencies => true;
 
   /**
    * Determine the analysis options that should be used for this test.
    */
   AnalysisOptionsImpl get options =>
       new AnalysisOptionsImpl()..enableGenericMethods = true;
@@ skipping 94 matching lines @@
       } else {
         UnlinkedPublicNamespace namespace =
             computePublicNamespaceFromText(text, source);
         expect(canonicalize(namespace),
             canonicalize(unlinkedUnits[i].publicNamespace),
             reason: 'publicNamespace(${unitUris[i]})');
       }
     }
   }
 }