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

content/content_shell.gypi

 # Copyright (c) 2012 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': {
     'content_shell_product_name': 'Content Shell',
     'content_shell_version': '99.77.34.5',
   },
   'targets': [
@@ skipping 548 matching lines @@
         'content_shell',
       ],
     },
     {
        'target_name': 'content_shell_mojo_bindings_mojom',
        'type': 'none',
        'variables': {
          'mojom_files': [
            'shell/common/layout_test/layout_test_bluetooth_fake_adapter_setter.mojom'
          ],
-         'use_new_wrapper_types': 'false',
        },
        'includes': [
          '../mojo/mojom_bindings_generator_explicit.gypi',
        ],
     },
     {
         'target_name': 'content_shell_mojo_bindings',
         'type': 'static_library',
         'dependencies': [
           'content_shell_mojo_bindings_mojom',
@@ skipping 337 matching lines @@
                 '--input_symbol', '<(PRODUCT_DIR)/content_shell.exe.pdb',
                 '--destination_dir', '<(dest_dir)',
               ],
             },
           ],
         },
       ],
     }],  # OS=="win" and fastbuild==0 and target_arch=="ia32"
   ]
 }