Created SerializableUserDataManager.

ios/web/BUILD.gn

Index: ios/web/BUILD.gn
diff --git a/ios/web/BUILD.gn b/ios/web/BUILD.gn
index d084d0f00ab37d993cac37f3314ce1006b93ef2a..1723dec7da8460807543f849d78f1ba582b24eca 100644
--- a/ios/web/BUILD.gn
+++ b/ios/web/BUILD.gn
@@ -68,10 +68,12 @@ source_set("web_arc") {
     "navigation/navigation_manager_facade_delegate.h",
     "navigation/navigation_manager_impl.h",
     "navigation/navigation_manager_impl.mm",
-    "navigation/navigation_manager_storage_builder.h",
-    "navigation/navigation_manager_storage_builder.mm",
     "navigation/nscoder_util.h",
     "navigation/nscoder_util.mm",
+    "navigation/serializable_user_data_manager_impl.h",
+    "navigation/serializable_user_data_manager_impl.mm",
+    "navigation/session_storage_builder.h",
+    "navigation/session_storage_builder.mm",
     "navigation/time_smoother.cc",
     "navigation/time_smoother.h",
     "net/cert_host_pair.cc",
@@ -103,8 +105,8 @@ source_set("web_arc") {
     "public/certificate_policy_cache.h",
     "public/crw_navigation_item_storage.h",
     "public/crw_navigation_item_storage.mm",
-    "public/crw_navigation_manager_storage.h",
-    "public/crw_navigation_manager_storage.mm",
+    "public/crw_session_storage.h",
+    "public/crw_session_storage.mm",
     "public/favicon_status.cc",
     "public/favicon_status.h",
     "public/favicon_url.cc",
@@ -125,6 +127,7 @@ source_set("web_arc") {
     "public/referrer_util.cc",
     "public/referrer_util.h",
     "public/security_style.h",
+    "public/serializable_user_data_manager.h",
     "public/ssl_status.cc",
     "public/ssl_status.h",
     "public/url_data_source_ios.h",
@@ -539,6 +542,7 @@ test("ios_web_unittests") {
     "payments/payment_request_unittest.cc",
     "public/origin_util_unittest.mm",
     "public/referrer_util_unittest.cc",
+    "public/serializable_user_data_manager_unittest.mm",
     "public/test/crw_mock_web_state_delegate.h",
     "public/test/crw_mock_web_state_delegate.mm",
     "public/web_state/page_viewport_state_unittest.mm",