base::EnumSet::Empty/Size deleted

These functions now match the case in std functions.

Chromium change:
https://chromium.googlesource.com/chromium/src/+/bda6288d5f00d7d00ae4b4274ef8743b6cbeb9cd

commit bda6288d5f00d7d00ae4b4274ef8743b6cbeb9cd
Author: Lei Zhang <thestig@chromium.org>
Date:   Fri Mar 29 23:16:03 2024 +0000

    Remove base::EnumSet::Empty() and Size()

    Replace with empty() and size(), respectively. The lowercase method
    names work better with templated code that expects classes to have
    size(), similar to STL containers.

    Fix a typo along the way.

components/brave_sync/brave_sync_p3a.cc

@@ -27,7 +27,7 @@ void RecordEnabledTypes(bool sync_everything_enabled,
       selected_types.HasAll(all_brave_supported_types)) {
     // Sync All
     sample = EnabledTypesAnswer::kAllTypes;
-  } else if (selected_types.Empty() ||
+  } else if (selected_types.empty() ||
              selected_types ==
                  UserSelectableTypeSet({UserSelectableType::kBookmarks})) {
     // Bookmarks or no types

components/sync/service/brave_sync_service_impl_unittest.cc

@@ -592,7 +592,7 @@ TEST_F(BraveSyncServiceImplTest, OnlyBookmarksAfterSetup) {
       brave_sync_service_impl()->GetUserSettings()->IsSyncEverythingEnabled());
   auto selected_types =
       brave_sync_service_impl()->GetUserSettings()->GetSelectedTypes();
-  EXPECT_EQ(selected_types.Size(), 1u);
+  EXPECT_EQ(selected_types.size(), 1u);
   EXPECT_TRUE(selected_types.Has(UserSelectableType::kBookmarks));
 
   OSCryptMocker::TearDown();