Everywhere: Hoist the Libraries folder to the top-level

Author: https://github.com/trflynn89
Commit: 93712b24bf
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/2256
Reviewed-by: https://github.com/sideshowbarker

Libraries/LibWeb/Layout/BlockContainer.h

@@ -0,0 +1,34 @@
+/*
+ * Copyright (c) 2018-2021, Andreas Kling <andreas@ladybird.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibWeb/Layout/Box.h>
+#include <LibWeb/Layout/LineBox.h>
+
+namespace Web::Layout {
+
+// https://www.w3.org/TR/css-display/#block-container
+class BlockContainer : public Box {
+    JS_CELL(BlockContainer, Box);
+
+public:
+    BlockContainer(DOM::Document&, DOM::Node*, CSS::StyleProperties);
+    BlockContainer(DOM::Document&, DOM::Node*, NonnullOwnPtr<CSS::ComputedValues>);
+    virtual ~BlockContainer() override;
+
+    Painting::PaintableWithLines const* paintable_with_lines() const;
+
+    virtual JS::GCPtr<Painting::Paintable> create_paintable() const override;
+
+private:
+    virtual bool is_block_container() const final { return true; }
+};
+
+template<>
+inline bool Node::fast_is<BlockContainer>() const { return is_block_container(); }
+
+}