Factor the extension loading code out of AccessibilityManager

chrome/browser/chromeos/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("//build/config/ui.gni")
 import("//media/media_options.gni")
 import("//third_party/protobuf/proto_library.gni")
 
 assert(is_chromeos)
@@ skipping 120 matching lines @@
 
   sources = [
     "../supervised_user/chromeos/manager_password_service.cc",
     "../supervised_user/chromeos/manager_password_service.h",
     "../supervised_user/chromeos/manager_password_service_factory.cc",
     "../supervised_user/chromeos/manager_password_service_factory.h",
     "../supervised_user/chromeos/supervised_user_password_service.cc",
     "../supervised_user/chromeos/supervised_user_password_service.h",
     "../supervised_user/chromeos/supervised_user_password_service_factory.cc",
     "../supervised_user/chromeos/supervised_user_password_service_factory.h",
+    "accessibility/accessibility_extension_loader.cc",
+    "accessibility/accessibility_extension_loader.h",
     "accessibility/accessibility_highlight_manager.cc",
     "accessibility/accessibility_highlight_manager.h",
     "accessibility/accessibility_manager.cc",
     "accessibility/accessibility_manager.h",
     "accessibility/accessibility_util.cc",
     "accessibility/accessibility_util.h",
     "accessibility/chromevox_panel.cc",
     "accessibility/chromevox_panel.h",
     "accessibility/magnification_manager.cc",
     "accessibility/magnification_manager.h",
@@ skipping 1438 matching lines @@
     "policy/proto/install_attributes.proto",
   ]
 }
 
 proto_library("attestation_proto") {
   sources = [
     "attestation/attestation_key_payload.proto",
     "attestation/attestation_signed_data.proto",
   ]
 }