Revert "Split bundle generation steps so that API registration is generated in browser, not common."

ui/accessibility/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("//extensions/generated_extensions_api.gni")
 
 component("accessibility") {
   sources = [
     "ax_node.cc",
     "ax_node.h",
@@ skipping 59 matching lines @@
     "//testing/gtest",
     "//ui/gfx",
     "//ui/gfx/geometry",
   ]
 }
 
 generated_extensions_api("ax_gen") {
   sources = [ "ax_enums.idl" ]
   deps = [ "//base/third_party/dynamic_annotations" ]
   root_namespace = "ui"
-  schemas = true
+  impl_dir = "."
+  bundle = true
 }