Browser+WebContent+WebDriver: Move Get Page Source to WebContent

Author: https://github.com/trflynn89
Commit: 88dcdf681f
Pull-request: https://github.com/SerenityOS/serenity/pull/16019
Reviewed-by: https://github.com/linusg ✅

Userland/Applications/Browser/BrowserWindow.cpp

@@ -607,10 +607,6 @@ void BrowserWindow::create_new_tab(URL url, bool activate)
         return active_tab().view().take_screenshot();
     };
 
-    new_tab.webdriver_endpoints().on_serialize_source = [this]() {
-        return active_tab().view().serialize_source();
-    };
-
     new_tab.webdriver_endpoints().on_execute_script = [this](String const& body, Vector<String> const& json_arguments, Optional<u64> const& timeout, bool async) {
         return active_tab().view().webdriver_execute_script(body, json_arguments, timeout, async);
     };