LibWeb: Add barebones CanvasGradient object

Also add the CanvasRenderingContext2D APIs to go along with it.
Note that it can't be used for anything yet.

Userland/Libraries/LibWeb/HTML/CanvasRenderingContext2D.cpp

@@ -496,4 +496,19 @@ CanvasRenderingContext2D::PreparedText CanvasRenderingContext2D::prepare_text(St
     return prepared_text;
 }
 
+NonnullRefPtr<CanvasGradient> CanvasRenderingContext2D::create_radial_gradient(double x0, double y0, double r0, double x1, double y1, double r1)
+{
+    return CanvasGradient::create_radial(x0, y0, r0, x1, y1, r1);
+}
+
+NonnullRefPtr<CanvasGradient> CanvasRenderingContext2D::create_linear_gradient(double x0, double y0, double x1, double y1)
+{
+    return CanvasGradient::create_linear(x0, y0, x1, y1);
+}
+
+NonnullRefPtr<CanvasGradient> CanvasRenderingContext2D::create_conic_gradient(double start_angle, double x, double y)
+{
+    return CanvasGradient::create_conic(start_angle, x, y);
+}
+
 }