LibWeb: Move to_gfx_scaling_mode() helper

There's no longer any reason to have this in StyleValue.h

Userland/Libraries/LibWeb/CSS/ComputedValues.h

@@ -160,6 +160,22 @@ struct BorderRadiusData {
     CSS::LengthPercentage vertical_radius { InitialValues::border_radius() };
 };
 
+// FIXME: Find a better place for this helper.
+inline Gfx::Painter::ScalingMode to_gfx_scaling_mode(CSS::ImageRendering css_value)
+{
+    switch (css_value) {
+    case CSS::ImageRendering::Auto:
+    case CSS::ImageRendering::HighQuality:
+    case CSS::ImageRendering::Smooth:
+        return Gfx::Painter::ScalingMode::BilinearBlend;
+    case CSS::ImageRendering::CrispEdges:
+        return Gfx::Painter::ScalingMode::NearestNeighbor;
+    case CSS::ImageRendering::Pixelated:
+        return Gfx::Painter::ScalingMode::SmoothPixels;
+    }
+    VERIFY_NOT_REACHED();
+}
+
 class ComputedValues {
 public:
     CSS::Float float_() const { return m_noninherited.float_; }

Userland/Libraries/LibWeb/CSS/StyleValue.h

@@ -36,22 +36,6 @@
 
 namespace Web::CSS {
 
-// FIXME: Find a better place for this helper.
-inline Gfx::Painter::ScalingMode to_gfx_scaling_mode(CSS::ImageRendering css_value)
-{
-    switch (css_value) {
-    case CSS::ImageRendering::Auto:
-    case CSS::ImageRendering::HighQuality:
-    case CSS::ImageRendering::Smooth:
-        return Gfx::Painter::ScalingMode::BilinearBlend;
-    case CSS::ImageRendering::CrispEdges:
-        return Gfx::Painter::ScalingMode::NearestNeighbor;
-    case CSS::ImageRendering::Pixelated:
-        return Gfx::Painter::ScalingMode::SmoothPixels;
-    }
-    VERIFY_NOT_REACHED();
-}
-
 template<typename T>
 struct ValueComparingNonnullRefPtr : public NonnullRefPtr<T> {
     using NonnullRefPtr<T>::NonnullRefPtr;