Adds support for POST request with bodies on WKWebView.

ios/web/ios_web.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 219 matching lines @@
         'web_state/crw_web_view_scroll_view_proxy.mm',
         'web_state/error_translation_util.h',
         'web_state/error_translation_util.mm',
         'web_state/frame_info.h',
         'web_state/global_web_state_event_tracker.cc',
         'web_state/global_web_state_event_tracker.h',
         'web_state/global_web_state_observer.cc',
         'web_state/js/credential_util.mm',
         'web_state/js/crw_js_early_script_manager.h',
         'web_state/js/crw_js_early_script_manager.mm',
+        'web_state/js/crw_js_post_request_loader.h',
+        'web_state/js/crw_js_post_request_loader.mm',
         'web_state/js/crw_js_injection_manager.mm',
         'web_state/js/crw_js_injection_receiver.mm',
         'web_state/js/crw_js_invoke_parameter_queue.h',
         'web_state/js/crw_js_invoke_parameter_queue.mm',
         'web_state/js/crw_js_plugin_placeholder_manager.h',
         'web_state/js/crw_js_plugin_placeholder_manager.mm',
         'web_state/js/crw_js_window_id_manager.h',
         'web_state/js/crw_js_window_id_manager.mm',
         'web_state/js/page_script_util.h',
         'web_state/js/page_script_util.mm',
@@ skipping 164 matching lines @@
     },
     {
       # GN version: //ios/web:js_resources
       'target_name': 'js_resources',
       'type': 'none',
       'dependencies': [
         'ios_web_js_bundle_ui',
         'ios_web_js_bundle_wk',
       ],
       'sources': [
+        'web_state/js/resources/post_request.js',  
         'web_state/js/resources/plugin_placeholder.js',
         'web_state/js/resources/window_id.js',
         'webui/resources/web_ui.js',
       ],
       'link_settings': {
         'mac_bundle_resources': [
+          '<(SHARED_INTERMEDIATE_DIR)/post_request.js',
           '<(SHARED_INTERMEDIATE_DIR)/plugin_placeholder.js',
           '<(SHARED_INTERMEDIATE_DIR)/window_id.js',
           '<(SHARED_INTERMEDIATE_DIR)/web_ui.js',
         ],
       },
       'includes': [
         'js_compile_checked.gypi'
       ],
     },
     {
@@ skipping 63 matching lines @@
       'dependencies': [
         '../../base/base.gyp:base'
       ],
       'sources': [
         'public/user_agent.h',
         'public/user_agent.mm',
       ],
     },
   ],
 }