AK+LibGUI+LibWeb: Remove AK::TypeTraits in favor of RTTI-based helpers

Now that we have RTTI in userspace, we can do away with all this manual
hackery and use dynamic_cast.

We keep the is<T> and downcast<T> helpers since they still provide good
readability improvements. Note that unlike dynamic_cast<T>, downcast<T>
does not fail in a recoverable way, but will assert if the object being
casted is not a T.

Libraries/LibWeb/Layout/BlockBox.h

@@ -81,7 +81,3 @@ void BlockBox::for_each_fragment(Callback callback) const
 }
 
 }
-
-AK_BEGIN_TYPE_TRAITS(Web::Layout::BlockBox)
-static bool is_type(const Web::Layout::Node& layout_node) { return layout_node.is_block(); }
-AK_END_TYPE_TRAITS()

Libraries/LibWeb/Layout/Box.h

@@ -124,7 +124,3 @@ private:
 };
 
 }
-
-AK_BEGIN_TYPE_TRAITS(Web::Layout::Box)
-static bool is_type(const Web::Layout::Node& layout_node) { return layout_node.is_box(); }
-AK_END_TYPE_TRAITS()

Libraries/LibWeb/Layout/BreakNode.h

@@ -45,7 +45,3 @@ private:
 };
 
 }
-
-AK_BEGIN_TYPE_TRAITS(Web::Layout::BreakNode)
-static bool is_type(const Web::Layout::Node& layout_node) { return layout_node.is_break(); }
-AK_END_TYPE_TRAITS()

Libraries/LibWeb/Layout/ButtonBox.h

@@ -55,7 +55,3 @@ private:
 };
 
 }
-
-AK_BEGIN_TYPE_TRAITS(Web::Layout::ButtonBox)
-static bool is_type(const Web::Layout::Node& layout_node) { return layout_node.is_button(); }
-AK_END_TYPE_TRAITS()

Libraries/LibWeb/Layout/CanvasBox.h

@@ -47,7 +47,3 @@ private:
 };
 
 }
-
-AK_BEGIN_TYPE_TRAITS(Web::Layout::CanvasBox)
-static bool is_type(const Web::Layout::Node& layout_node) { return layout_node.is_canvas(); }
-AK_END_TYPE_TRAITS()

Libraries/LibWeb/Layout/CheckBox.h

@@ -54,7 +54,3 @@ private:
 };
 
 }
-
-AK_BEGIN_TYPE_TRAITS(Web::Layout::CheckBox)
-static bool is_type(const Web::Layout::Node& layout_node) { return layout_node.is_check_box(); }
-AK_END_TYPE_TRAITS()

Libraries/LibWeb/Layout/FrameBox.h

@@ -49,7 +49,3 @@ private:
 };
 
 }
-
-AK_BEGIN_TYPE_TRAITS(Web::Layout::FrameBox)
-static bool is_type(const Web::Layout::Node& layout_node) { return layout_node.is_frame(); }
-AK_END_TYPE_TRAITS()

Libraries/LibWeb/Layout/ImageBox.h

@@ -56,7 +56,3 @@ private:
 };
 
 }
-
-AK_BEGIN_TYPE_TRAITS(Web::Layout::ImageBox)
-static bool is_type(const Web::Layout::Node& layout_node) { return layout_node.is_image(); }
-AK_END_TYPE_TRAITS()

Libraries/LibWeb/Layout/InitialContainingBlockBox.h

@@ -61,7 +61,3 @@ private:
 };
 
 }
-
-AK_BEGIN_TYPE_TRAITS(Web::Layout::InitialContainingBlockBox)
-static bool is_type(const Web::Layout::Node& layout_node) { return layout_node.is_initial_containing_block(); }
-AK_END_TYPE_TRAITS()

Libraries/LibWeb/Layout/InlineNode.h

@@ -45,7 +45,3 @@ private:
 };
 
 }
-
-AK_BEGIN_TYPE_TRAITS(Web::Layout::InlineNode)
-static bool is_type(const Web::Layout::Node& layout_node) { return layout_node.is_inline_node(); }
-AK_END_TYPE_TRAITS()

Libraries/LibWeb/Layout/ListItemBox.h

@@ -48,7 +48,3 @@ private:
 };
 
 }
-
-AK_BEGIN_TYPE_TRAITS(Web::Layout::ListItemBox)
-static bool is_type(const Web::Layout::Node& layout_node) { return layout_node.is_list_item(); }
-AK_END_TYPE_TRAITS()

Libraries/LibWeb/Layout/Node.h

@@ -271,7 +271,3 @@ inline NodeWithStyle* Node::parent()
 }
 
 }
-
-AK_BEGIN_TYPE_TRAITS(Web::Layout::NodeWithStyle)
-static bool is_type(const Web::Layout::Node& node) { return node.has_style(); }
-AK_END_TYPE_TRAITS()

Libraries/LibWeb/Layout/ReplacedBox.h

@@ -76,7 +76,3 @@ private:
 };
 
 }
-
-AK_BEGIN_TYPE_TRAITS(Web::Layout::ReplacedBox)
-static bool is_type(const Web::Layout::Node& layout_node) { return layout_node.is_replaced(); }
-AK_END_TYPE_TRAITS()

Libraries/LibWeb/Layout/TableBox.h

@@ -41,7 +41,3 @@ private:
 };
 
 }
-
-AK_BEGIN_TYPE_TRAITS(Web::Layout::TableBox)
-static bool is_type(const Web::Layout::Node& layout_node) { return layout_node.is_table(); }
-AK_END_TYPE_TRAITS()

Libraries/LibWeb/Layout/TableCellBox.h

@@ -47,7 +47,3 @@ private:
 };
 
 }
-
-AK_BEGIN_TYPE_TRAITS(Web::Layout::TableCellBox)
-static bool is_type(const Web::Layout::Node& layout_node) { return layout_node.is_table_cell(); }
-AK_END_TYPE_TRAITS()

Libraries/LibWeb/Layout/TableRowBox.h

@@ -41,7 +41,3 @@ private:
 };
 
 }
-
-AK_BEGIN_TYPE_TRAITS(Web::Layout::TableRowBox)
-static bool is_type(const Web::Layout::Node& layout_node) { return layout_node.is_table_row(); }
-AK_END_TYPE_TRAITS()

Libraries/LibWeb/Layout/TableRowGroupBox.h

@@ -43,7 +43,3 @@ private:
 };
 
 }
-
-AK_BEGIN_TYPE_TRAITS(Web::Layout::TableRowGroupBox)
-static bool is_type(const Web::Layout::Node& layout_node) { return layout_node.is_table_row_group(); }
-AK_END_TYPE_TRAITS()

Libraries/LibWeb/Layout/TextNode.h

@@ -63,7 +63,3 @@ private:
 };
 
 }
-
-AK_BEGIN_TYPE_TRAITS(Web::Layout::TextNode)
-static bool is_type(const Web::Layout::Node& layout_node) { return layout_node.is_text(); }
-AK_END_TYPE_TRAITS()

Libraries/LibWeb/Layout/WidgetBox.h

@@ -51,7 +51,3 @@ private:
 };
 
 }
-
-AK_BEGIN_TYPE_TRAITS(Web::Layout::WidgetBox)
-static bool is_type(const Web::Layout::Node& layout_node) { return layout_node.is_widget(); }
-AK_END_TYPE_TRAITS()