LibWeb: Add missing [as/is]_border_radius_shorthand() methods

Userland/Libraries/LibWeb/CSS/StyleValue.cpp

@@ -59,6 +59,12 @@ BorderRadiusStyleValue const& StyleValue::as_border_radius() const
     return static_cast<BorderRadiusStyleValue const&>(*this);
 }
 
+BorderRadiusShorthandStyleValue const& StyleValue::as_border_radius_shorthand() const
+{
+    VERIFY(is_border_radius_shorthand());
+    return static_cast<BorderRadiusShorthandStyleValue const&>(*this);
+}
+
 ShadowStyleValue const& StyleValue::as_shadow() const
 {
     VERIFY(is_shadow());

Userland/Libraries/LibWeb/CSS/StyleValue.h

@@ -122,6 +122,7 @@ public:
     bool is_background_size() const { return type() == Type::BackgroundSize; }
     bool is_border() const { return type() == Type::Border; }
     bool is_border_radius() const { return type() == Type::BorderRadius; }
+    bool is_border_radius_shorthand() const { return type() == Type::BorderRadiusShorthand; }
     bool is_calculated() const { return type() == Type::Calculated; }
     bool is_color() const { return type() == Type::Color; }
     bool is_content() const { return type() == Type::Content; }
@@ -156,6 +157,7 @@ public:
     BackgroundRepeatStyleValue const& as_background_repeat() const;
     BackgroundSizeStyleValue const& as_background_size() const;
     BorderRadiusStyleValue const& as_border_radius() const;
+    BorderRadiusShorthandStyleValue const& as_border_radius_shorthand() const;
     BorderStyleValue const& as_border() const;
     CalculatedStyleValue const& as_calculated() const;
     ColorStyleValue const& as_color() const;
@@ -189,6 +191,7 @@ public:
     BackgroundRepeatStyleValue& as_background_repeat() { return const_cast<BackgroundRepeatStyleValue&>(const_cast<StyleValue const&>(*this).as_background_repeat()); }
     BackgroundSizeStyleValue& as_background_size() { return const_cast<BackgroundSizeStyleValue&>(const_cast<StyleValue const&>(*this).as_background_size()); }
     BorderRadiusStyleValue& as_border_radius() { return const_cast<BorderRadiusStyleValue&>(const_cast<StyleValue const&>(*this).as_border_radius()); }
+    BorderRadiusShorthandStyleValue& as_border_radius_shorthand() { return const_cast<BorderRadiusShorthandStyleValue&>(const_cast<StyleValue const&>(*this).as_border_radius_shorthand()); }
     BorderStyleValue& as_border() { return const_cast<BorderStyleValue&>(const_cast<StyleValue const&>(*this).as_border()); }
     CalculatedStyleValue& as_calculated() { return const_cast<CalculatedStyleValue&>(const_cast<StyleValue const&>(*this).as_calculated()); }
     ColorStyleValue& as_color() { return const_cast<ColorStyleValue&>(const_cast<StyleValue const&>(*this).as_color()); }

Userland/Libraries/LibWeb/Forward.h

@@ -30,6 +30,7 @@ class BackgroundRepeatStyleValue;
 class BackgroundSizeStyleValue;
 class BackgroundStyleValue;
 class BorderRadiusStyleValue;
+class BorderRadiusShorthandStyleValue;
 class BorderStyleValue;
 class CalculatedStyleValue;
 class ColorStyleValue;