[IME] Loads chromeos-xkb extension and add the extension based xkb keyboards in the chrome://settin…

chrome/browser/chromeos/input_method/component_extension_ime_manager_impl.cc

 // Copyright 2013 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.
 
 #include "chrome/browser/chromeos/input_method/component_extension_ime_manager_impl.h"
 
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "chrome/browser/extensions/component_loader.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/common/extensions/extension_file_util.h"
 #include "chrome/common/extensions/extension_l10n_util.h"
 #include "content/public/browser/browser_thread.h"
 #include "extensions/browser/extension_system.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/manifest_constants.h"
 #include "ui/base/l10n/l10n_util.h"
 
 namespace chromeos {
 
 namespace {
 
 struct WhitelistedComponentExtensionIME {
   const char* id;
   const char* path;
 } whitelisted_component_extension[] = {
   {
+    // ChromeOS xkb extension.
+    "fgoepimhcoialccpbmpnnblemnepkkao",
+    "/usr/share/chromeos-assets/input_methods/xkb",
+  },
+  {
     // ChromeOS Keyboards extension.
     "jhffeifommiaekmbkkjlpmilogcfdohp",
     "/usr/share/chromeos-assets/input_methods/keyboard_layouts",
   },
   {
     // ChromeOS Hangul Input.
     "bdgdidmhaijohebebipajioienkglgfo",
     "/usr/share/chromeos-assets/input_methods/hangul",
   },
 #if defined(OFFICIAL_BUILD)
@@ skipping 267 matching lines @@
     std::vector<ComponentExtensionIME>* result,
     const base::Closure& callback) {
   DCHECK(thread_checker_.CalledOnValidThread());
   DCHECK(result);
   component_extension_list_ = *result;
   is_initialized_ = true;
   callback.Run();
 }
 
 }  // namespace chromeos