Identity API: Change WebAuthFlow to use <webview> instead of a normal browser pop-up.

chrome/common/extensions/api/api.gyp

 # Copyright (c) 2012 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.
 
 {
   'targets': [
     {
       'target_name': 'api',
       'type': 'static_library',
       'sources': [
@@ skipping 44 matching lines @@
           'experimental_system_info_cpu.idl',
           'experimental_system_info_memory.idl',
           'experimental_system_info_storage.idl',
           'extension.json',
           'file_browser_handler_internal.json',
           'file_system.idl',
           'font_settings.json',
           'history.json',
           'i18n.json',
           'identity.idl',
+          'identity_private.idl',
           'idle.json',
           'managed_mode_private.json',
           'management.json',
           'manifest_types.json',
           'media_galleries.idl',
           'media_galleries_private.idl',
           'media_player_private.json',
           'metrics_private.json',
           'networking_private.json',
           'notifications.idl',
@@ skipping 41 matching lines @@
         ['OS!="chromeos"', {
           'schema_files!': [
             'file_browser_handler_internal.json',
             'rtc_private.idl',
           ],
         }],
       ],
     },
   ],
 }