Mojo JS bindings: flip the default value of use_new_js_bindings to true.

gpu/ipc/common/BUILD.gn

 # Copyright 2016 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("//build/config/ui.gni")
 import("//mojo/public/tools/bindings/mojom.gni")
 
 group("common") {
   if (is_component_build) {
     public_deps = [
@@ skipping 136 matching lines @@
     "sync_token.mojom",
   ]
 
   public_deps = [
     "//mojo/common:common_custom_types",
     "//ui/gfx/geometry/mojo",
   ]
 
   # TODO(crbug.com/714018): Convert the implementation to use OnceCallback.
   use_once_callback = false
+
+  # TODO(crbug.com/699569): Convert to use the new JS bindings.
+  use_new_js_bindings = false
 }
 
 mojom("test_interfaces") {
   testonly = true
   sources = [
     "traits_test_service.mojom",
   ]
 
   public_deps = [
     ":interfaces",
@@ skipping 12 matching lines @@
     "sync_token_struct_traits.h",
   ]
   deps = [
     ":interfaces_shared_cpp_sources",
     ":surface_handle_type",
     "//gpu/command_buffer/common",
     "//gpu/ipc/common",
     "//mojo/public/cpp/bindings:bindings",
   ]
 }