Browser+LibWeb+WebContent: Parse cookies in the OOP tab

To protect the main Browser process against nefarious cookies, parse the
cookies out-of-process and then send the parsed result over IPC to the
main process. This way, if the cookie parser blows up, only that tab
will be affected.

Userland/Libraries/LibWeb/WebContentClient.cpp

@@ -27,6 +27,7 @@
 #include "WebContentClient.h"
 #include "OutOfProcessWebView.h"
 #include <AK/Debug.h>
+#include <LibWeb/Cookie/ParsedCookie.h>
 
 namespace Web {