LibWeb: Extract CanvasImageData class from CRC2D

Userland/Libraries/LibWeb/HTML/Canvas/CanvasImageData.h

@@ -0,0 +1,26 @@
+/*
+ * Copyright (c) 2022, Sam Atkins <atkinssj@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibWeb/HTML/ImageData.h>
+
+namespace Web::HTML {
+
+// https://html.spec.whatwg.org/multipage/canvas.html#canvasdrawpath
+class CanvasImageData {
+public:
+    virtual ~CanvasImageData() = default;
+
+    virtual RefPtr<ImageData> create_image_data(int width, int height) const = 0;
+    virtual DOM::ExceptionOr<RefPtr<ImageData>> get_image_data(int x, int y, int width, int height) const = 0;
+    virtual void put_image_data(ImageData const&, float x, float y) = 0;
+
+protected:
+    CanvasImageData() = default;
+};
+
+}