Mojo C++ bindings: Remove more use_new_wrapper_types=false.

components/contextual_search/BUILD.gn

 # 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.
 
 import("//mojo/public/tools/bindings/mojom.gni")
 
 mojom("mojo_bindings") {
   sources = [
     "common/contextual_search_js_api_service.mojom",
     "common/overlay_page_notifier_service.mojom",
   ]
-
-  use_new_wrapper_types = false
 }
 
 static_library("browser") {
   sources = [
     "browser/contextual_search_js_api_service_impl.cc",
     "browser/contextual_search_js_api_service_impl.h",
     "browser/ctr_aggregator.cc",
     "browser/ctr_aggregator.h",
     "browser/weekly_activity_storage.cc",
     "browser/weekly_activity_storage.h",
@@ skipping 31 matching lines @@
     "//base",
     "//content/public/common",
     "//content/public/renderer",
     "//gin",
     "//mojo/public/cpp/bindings",
     "//services/service_manager/public/cpp",
     "//third_party/WebKit/public:blink_headers",
     "//v8",
   ]
 }