[css-paint-api] Specify that we have no intrinsic dimensions at the moment, will be added in a future level of the spec.

Author: bfgeek

css-paint-api/Overview.bs

@@ -160,8 +160,6 @@ Note: In a future version of the spec, the author may be able to set an option t
     to render 3D effects. There are complexities in setting up a WebGL rendering context to take the
     {{Geometry}} and {{StylePropertyMap}} as inputs.
 
-Issue(w3c/css-houdini-drafts#31): Allow author to specify the intrinsic size.
-
 Paint Notation {#paint-notation}
 ================================
 
@@ -231,9 +229,6 @@ If a <<paint()>> function for a fragment is <a>paint-invalid</a> and the fragmen
 visual viewport, then user agent <em>must</em> <a>draw a paint image</a> for the current frame. The
 user agent <em>may not</em> defer the <a>draw a paint image</a> operation until a subsequent frame.
 
-The <a>draw a paint image</a> function should be invoked by the user agent during the <a>object size
-negotiation</a> algorithm which is responsible for rendering an <<image>>.
-
 Note: The user agent may choose to <a>draw a paint image</a> for <<paint()>> functions not within
     the visual viewport.
 
@@ -248,7 +243,19 @@ Note: The user agent may choose to <a>draw a paint image</a> for <<paint()>> fun
     a paint image</a> and display the result on the current frame.
 </div>
 
-The {{Geometry}} object represents the geometry of the image that the author should draw.
+The <a>draw a paint image</a> function should be invoked by the user agent during the <a>object size
+negotiation</a> algorithm which is responsible for rendering an <<image>>.
+
+For the purposes of the <a>object size negotiation</a> algorithm, the paint image has no
+<a>intrinsic dimensions</a>.
+
+Note: In a future version of the spec, the author may be able to specify the <a>intrinsic
+    dimensions</a> of the paint image. This will probably be exposed as a callback allowing the
+    author to define static <a>intrinsic dimensions</a> or dynamically updating the <a>intrinsic
+    dimensions</a> based on computed style and geometry changes.
+
+The {{Geometry}} object represents the geometry of the image that the author should draw. This is
+the <a>concrete object size</a> given by the user agent.
 
 <pre class='idl'>
 [Exposed=Worklet]