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

device/serial/serial.gyp

 # Copyright 2014 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': {
     'chromium_code': 1,
   },
   'targets': [
     {
       # GN version: //device/serial:serial_mojo
       'target_name': 'device_serial_mojo',
       # The type of this target must be none. This is so that resources can
       # depend upon this target for generating the js bindings files. Any
       # generated cpp files must be listed explicitly in device_serial
       'type': 'none',
       'includes': [
         '../../mojo/mojom_bindings_generator.gypi',
       ],
       'sources': [
         'data_stream.mojom',
         'data_stream_serialization.mojom',
         'serial.mojom',
         'serial_serialization.mojom',
       ],
+      'variables': {
+        'use_new_wrapper_types': 'false',
+      },
     },
     {
       # GN version: //device/serial
       'target_name': 'device_serial',
       'type': 'static_library',
       'conditions': [
         ['chromeos==1', {
           'dependencies': [
             '../../chromeos/chromeos.gyp:chromeos',
             '../../dbus/dbus.gyp:dbus',
@@ skipping 96 matching lines @@
         'device_serial',
         'device_serial_mojo',
       ],
       'sources': [
         'test_serial_io_handler.cc',
         'test_serial_io_handler.h',
       ],
     },
   ],
 }