[ios] Correctly determine last seen WKNavigation object.

ios/web/BUILD.gn

 # Copyright 2015 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("//ios/build/config.gni")
 import("//ios/web/js_compile.gni")
 import("//testing/test.gni")
 import("//tools/grit/grit_rule.gni")
 
 group("all_tests") {
@@ skipping 189 matching lines @@
     "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",
     "web_state/page_viewport_state.h",
     "web_state/page_viewport_state.mm",
     "web_state/ui/crw_generic_content_view.mm",
     "web_state/ui/crw_swipe_recognizer_provider.h",
     "web_state/ui/crw_touch_tracking_recognizer.h",
     "web_state/ui/crw_touch_tracking_recognizer.mm",
+    "web_state/ui/crw_wk_navigation_states.h",
+    "web_state/ui/crw_wk_navigation_states.mm",
     "web_thread_impl.cc",
     "web_thread_impl.h",
     "web_view_creation_util.mm",
     "webui/crw_web_ui_manager.h",
     "webui/crw_web_ui_manager.mm",
     "webui/crw_web_ui_page_builder.h",
     "webui/crw_web_ui_page_builder.mm",
     "webui/mojo_facade.h",
     "webui/mojo_facade.mm",
     "webui/mojo_js_constants.cc",
@@ skipping 313 matching lines @@
     "web_state/js/common_js_unittest.mm",
     "web_state/js/core_js_unittest.mm",
     "web_state/js/credential_util_unittest.mm",
     "web_state/js/crw_js_injection_manager_unittest.mm",
     "web_state/js/crw_js_post_request_loader_unittest.mm",
     "web_state/js/crw_js_window_id_manager_unittest.mm",
     "web_state/js/page_script_util_unittest.mm",
     "web_state/ui/crw_web_controller_container_view_unittest.mm",
     "web_state/ui/crw_web_controller_observer_unittest.mm",
     "web_state/ui/crw_web_controller_unittest.mm",
+    "web_state/ui/crw_wk_navigation_states_unittest.mm",
     "web_state/ui/crw_wk_script_message_router_unittest.mm",
     "web_state/ui/web_view_js_utils_unittest.mm",
     "web_state/ui/wk_back_forward_list_item_holder_unittest.mm",
     "web_state/ui/wk_web_view_configuration_provider_unittest.mm",
     "web_state/web_state_delegate_bridge_unittest.mm",
     "web_state/web_state_delegate_stub.h",
     "web_state/web_state_delegate_stub.mm",
     "web_state/web_state_impl_unittest.mm",
     "web_state/web_view_internal_creation_util_unittest.mm",
     "web_state/wk_web_view_security_util_unittest.mm",
@@ skipping 73 matching lines @@
 }
 
 grit("resources") {
   source = "ios_web_resources.grd"
   use_qualified_include = true
   outputs = [
     "grit/ios_web_resources.h",
     "ios_web_resources.pak",
   ]
 }