UI/AppKit: Update the User-Agent to the provided UA override name

Author: https://github.com/trflynn89
Commit: https://github.com/LadybirdBrowser/ladybird/commit/e2ff234ac25
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/1215
Reviewed-by: https://github.com/tcl3 ✅

Ladybird/AppKit/UI/LadybirdWebViewBridge.cpp

@@ -11,6 +11,7 @@
 #include <LibIPC/File.h>
 #include <LibWeb/Crypto/Crypto.h>
 #include <LibWebView/Application.h>
+#include <LibWebView/UserAgent.h>
 #include <UI/LadybirdWebViewBridge.h>
 
 #import <UI/Palette.h>
@@ -176,6 +177,11 @@ void WebViewBridge::initialize_client(CreateNewClient)
     if (auto const& webdriver_content_ipc_path = WebView::Application::chrome_options().webdriver_content_ipc_path; webdriver_content_ipc_path.has_value()) {
         client().async_connect_to_webdriver(m_client_state.page_index, *webdriver_content_ipc_path);
     }
+
+    if (auto const& user_agent_preset = WebView::Application::web_content_options().user_agent_preset; user_agent_preset.has_value()) {
+        auto user_agent = *WebView::user_agents.get(*user_agent_preset);
+        client().async_debug_request(m_client_state.page_index, "spoof-user-agent"sv, user_agent);
+    }
 }
 
 }

Ladybird/AppKit/UI/TabController.mm

@@ -93,6 +93,10 @@ static NSString* const TOOLBAR_TAB_OVERVIEW_IDENTIFIER = @"ToolbarTabOverviewIde
         [self.toolbar setSizeMode:NSToolbarSizeModeRegular];
 
         m_settings = { .block_popups = WebView::Application::chrome_options().allow_popups == WebView::AllowPopups::Yes ? NO : YES };
+
+        if (auto const& user_agent_preset = WebView::Application::web_content_options().user_agent_preset; user_agent_preset.has_value())
+            m_settings.user_agent_name = *user_agent_preset;
+
         m_can_navigate_back = false;
         m_can_navigate_forward = false;
     }