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

components/web_cache.gypi

 # Copyright (c) 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.
 
 {
   'targets': [
     {
       # GN version: //components/web_cache/public/interfaces
       'target_name': 'web_cache_mojo_bindings',
       'type': 'static_library',
       'sources': [
         # NOTE: Sources duplicated in //components/web_cache/public/interfaces/BUILD.gn
         'web_cache/public/interfaces/web_cache.mojom',
       ],
+      'variables': {
+        'use_new_wrapper_types': 'false',
+      },
       'includes': [ '../mojo/mojom_bindings_generator.gypi'],
     },
     {
       'target_name': 'web_cache_browser',
       'type': 'static_library',
       'dependencies': [
         '<(DEPTH)/base/base.gyp:base',
         '<(DEPTH)/content/content.gyp:content_browser',
         '<(DEPTH)/third_party/WebKit/public/blink.gyp:blink',
         'web_cache_mojo_bindings',
@@ skipping 14 matching lines @@
         '<(DEPTH)/third_party/WebKit/public/blink.gyp:blink',
         'web_cache_mojo_bindings',
       ],
       'sources': [
         'web_cache/renderer/web_cache_impl.cc',
         'web_cache/renderer/web_cache_impl.h',
       ],
     },
   ],
 }