Everywhere: Hoist the Libraries folder to the top-level

Libraries/LibWeb/HTML/PolicyContainers.h

@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2022, Linus Groh <linusg@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibIPC/Forward.h>
+#include <LibWeb/HTML/EmbedderPolicy.h>
+#include <LibWeb/ReferrerPolicy/ReferrerPolicy.h>
+
+namespace Web::HTML {
+
+// https://html.spec.whatwg.org/multipage/origin.html#policy-container
+// A policy container is a struct containing policies that apply to a Document, a WorkerGlobalScope, or a WorkletGlobalScope. It has the following items:
+struct PolicyContainer {
+    // https://html.spec.whatwg.org/multipage/origin.html#policy-container-csp-list
+    // FIXME: A CSP list, which is a CSP list. It is initially empty.
+
+    // https://html.spec.whatwg.org/multipage/origin.html#policy-container-embedder-policy
+    // An embedder policy, which is an embedder policy. It is initially a new embedder policy.
+    EmbedderPolicy embedder_policy {};
+
+    // https://html.spec.whatwg.org/multipage/origin.html#policy-container-referrer-policy
+    // A referrer policy, which is a referrer policy. It is initially the default referrer policy.
+    ReferrerPolicy::ReferrerPolicy referrer_policy { ReferrerPolicy::DEFAULT_REFERRER_POLICY };
+};
+
+}
+
+namespace IPC {
+template<>
+ErrorOr<void> encode(IPC::Encoder&, Web::HTML::PolicyContainer const&);
+
+template<>
+ErrorOr<Web::HTML::PolicyContainer> decode(IPC::Decoder&);
+}