Mojo C++ bindings: make the generator use STL/WTF string/vector/map by default.

components/safe_json.gypi

 # Copyright 2015 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.
 
 {
   'targets': [
     {
       # GN version: //components/safe_json
       'target_name': 'safe_json',
       'type': 'static_library',
@@ skipping 50 matching lines @@
       ],
     },
     {
       # GN version: //components/safe_json/public/interfaces
       'target_name': 'safe_json_mojo_bindings',
       'type': 'static_library',
       'variables': {
         'mojom_typemaps': [
           'safe_json/public/interfaces/safe_json.typemap',
         ],
+        'use_new_wrapper_types': 'false',
       },
       'sources': [
         'safe_json/public/interfaces/safe_json.mojom',
       ],
       'includes': [ '../mojo/mojom_bindings_generator.gypi'],
     },
     {
       'target_name': 'safe_json_parser_mojo',
       'type': 'static_library',
       'dependencies': [
@@ skipping 36 matching lines @@
           ],
           'variables': {
             'jni_gen_package': 'safe_json',
           },
           'includes': [ '../build/jni_generator.gypi' ],
         },
       ],
     }],
   ]
 }