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

extensions/common/BUILD.gn

 # 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.
 
 import("//build/config/features.gni")
 import("//extensions/features/features.gni")
 import("//mojo/public/tools/bindings/mojom.gni")
 
 source_set("common_constants") {
   sources = [
@@ skipping 18 matching lines @@
       sources += [ "mojo/wifi_display_session_service.mojom" ]
     }
 
     public_deps = [
       "//mojo/common:common_custom_types",
       "//url/mojo:url_mojom_gurl",
     ]
 
     # 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
   }
 
   # This must be a static library because extensions common depends on
   # GetTrustedICAPublicKey in extensions/browser which isn't always linked
   # in. TODO(brettw): This reverse dependency should be fixed.
   static_library("common") {
     sources = [
       "alias.h",
       "api/bluetooth/bluetooth_manifest_data.cc",
       "api/bluetooth/bluetooth_manifest_data.h",
@@ skipping 338 matching lines @@
       "//ui/base",
       "//ui/gfx",
       "//url",
     ]
 
     if (is_chromeos) {
       sources += [ "manifest_handlers/action_handlers_handler_unittest.cc" ]
     }
   }
 }  # enable_extensions