Switch on use_new_wrapper_types mode for content/shell and content/test.

content/content_tests.gypi

 # Copyright (c) 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 {
   'variables': {
     'layouttest_support_content_sources': [
       'public/test/layouttest_support.h',
       'public/test/nested_message_pump_android.cc',
       'public/test/nested_message_pump_android.h',
@@ skipping 1363 matching lines @@
     {
       # GN version: //content/test:web_ui_test_mojo_bindings
       'target_name': 'web_ui_test_mojo_bindings',
       'type': 'static_library',
       'dependencies': [
         '../mojo/mojo_public.gyp:mojo_cpp_bindings',
       ],
       'sources': [
         'test/data/web_ui_test_mojo_bindings.mojom',
       ],
-      'variables': {
-        'use_new_wrapper_types': 'false',
-      },
       'includes': [ '../mojo/mojom_bindings_generator.gypi' ],
       'export_dependent_settings': [
         '../mojo/mojo_public.gyp:mojo_cpp_bindings',
       ],
     },
     {
       # GN version: //content/tests:content_browsertests
       'target_name': 'content_browsertests',
       'type': '<(gtest_target_type)',
       'dependencies': [
@@ skipping 547 matching lines @@
                   'content_unittests_apk.isolate',
                 ],
               },
             ],
           },
         ],
       ],
     }],
   ],
 }