[iOS] Upstream switches and flags controlling which WebView is used

ios/chrome/ios_chrome.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
    },
   'targets': [
     {
@@ skipping 251 matching lines @@
         'browser/ui/uikit_ui_util.mm',
         'browser/ui/url_loader.h',
         'browser/updatable_config/updatable_array.h',
         'browser/updatable_config/updatable_array.mm',
         'browser/updatable_config/updatable_config_base.h',
         'browser/updatable_config/updatable_config_base.mm',
         'browser/updatable_config/updatable_dictionary.h',
         'browser/updatable_config/updatable_dictionary.mm',
         'browser/web/dom_altering_lock.h',
         'browser/web/dom_altering_lock.mm',
+        'browser/web/web_view_type_util.h',
+        'browser/web/web_view_type_util.mm',
         'browser/web_resource/ios_web_resource_service.cc',
         'browser/web_resource/ios_web_resource_service.h',
         'browser/xcallback_parameters.h',
         'browser/xcallback_parameters.mm',
       ],
     },
     {
       'target_name': 'ios_chrome_common',
       'type': 'static_library',
       'include_dirs': [
@@ skipping 23 matching lines @@
         '../../ios/web/js_compile.gypi',
       ],
       'link_settings': {
         'mac_bundle_resources': [
           '<(SHARED_INTERMEDIATE_DIR)/find_in_page.js',
         ],
       },
     },
   ],
 }