[resize-observer] Removed scroll-box from boxes to be observed

Author: Greg Whitworth

resize-observer-1/Overview.bs

@@ -36,10 +36,6 @@ urlPrefix: https://www.w3.org/TR/SVG2/#InterfaceSVGGraphicsElement
         url: #InterfaceSVGGraphicsElement; type: dfn; text: SVGGraphicsElement
 urlPrefix: https://www.w3.org/TR/css3-multicol/
     url: #; type: dfn; text: Multi-column
-urlPrefix: https://www.w3.org/TR/css-overflow-3/
-    url: #scrollport; type:dfn; text: scrollport
-urlPrefix: https://www.w3.org/TR/css-overflow-3/
-    url: #scroll-container; type:dfn; text: scroll container
 urlPrefix:  https://www.w3.org/TR/css-display-3/
     url: #propdef-display; type:dfn; text: display
 urlPrefix: https://www.w3.org/TR/CSS21/box.html
@@ -139,15 +135,14 @@ It is modeled after {{MutationObserver}} and {{IntersectionObserver}}.
 
 <pre class="idl">
     enum ResizeObserverBoxOptions {
-        "border-box", "content-box", "scroll-box", "device-pixel-border-box"
+        "border-box", "content-box", "device-pixel-border-box"
     };
 </pre>
 
 ResizeObserver can observe different kinds of CSS sizes:
 
 * {{border-box}}  : size of <a>box border area</a> as defined in CSS2.
 * {{content-box}} : size of <a>content area</a> as defined in CSS2.
-* {{scroll-box}}  : the <a>scrollport</a> of the <a>scroll container</a>.
 * {{device-pixel-border-box}} : border-box size in device pixels.
 
 {{device-pixel-border-box}} is slightly different from other sizes.
@@ -256,7 +251,6 @@ interface ResizeObserverEntry {
     readonly attribute DOMRectReadOnly contentRect;
     readonly attribute ResizeObserverSize borderBoxSize;
     readonly attribute ResizeObserverSize contentSize;
-    readonly attribute ResizeObserverSize scrollSize;
     readonly attribute ResizeObserverSize devicePixelBorderBoxSize;
 };
 </pre>
@@ -277,9 +271,6 @@ interface ResizeObserverEntry {
     : <dfn>contentSize</dfn>
     ::
         {{Element}}'s <a>content rect</a> size when {{ResizeObserverCallback}} is invoked.
-    : <dfn>scrollSize</dfn>
-    ::
-        {{Element}}'s <a>scrollport</a> when {{ResizeObserverCallback}} is invoked.
     : <dfn>devicePixelBorderBoxSize</dfn>
     ::
         {{Element}}'s <a>border box</a> size in device pixels when {{ResizeObserverCallback}} is invoked.
@@ -298,21 +289,18 @@ interface ResizeObserverEntry {
         4. Set |this|.{{ResizeObserverEntry/contentSize}} slot to result of <a href="#calculate-box-size">
             computing size given |target| and specificSize of "content-box"</a>.
 
-        5. Set |this|.{{ResizeObserverEntry/scrollSize}} slot to result of <a href="#calculate-box-size">
-            computing size given |target| and specificSize of "scroll-box"</a>.
-
-        6. Set |this|.{{ResizeObserverEntry/devicePixelBorderBoxSize}} slot to result of <a href="#calculate-box-size">
+        5. Set |this|.{{ResizeObserverEntry/devicePixelBorderBoxSize}} slot to result of <a href="#calculate-box-size">
             computing size given |target| and specificSize of "device-pixel-border-box"</a>.
 
-        7. Set |this|.{{ResizeObserverEntry/contentRect}} to logical |this|.{{ResizeObserverEntry/contentSize}}.
+        6. Set |this|.{{ResizeObserverEntry/contentRect}} to logical |this|.{{ResizeObserverEntry/contentSize}}.
 
-        8. If |target| is not an SVG element do these steps:
+        7. If |target| is not an SVG element do these steps:
 
             1. Set |this|.|contentRect|.top to |target|.<a>padding top</a>.
 
             2. Set |this|.|contentRect|.left to |target|.<a>padding left</a>.
 
-        9. If |target| is an SVG element do these steps:
+        8. If |target| is an SVG element do these steps:
 
             1. Set |this|.|contentRect|.top and |this|.contentRect.left to 0.
 
@@ -490,9 +478,7 @@ run these steps:
 
             2. Matching size is |entry|.{{ResizeObserverEntry/contentSize}} if |observation|.{{ResizeObservation/observedBox}} is "content-box"
 
-            3. Matching size is |entry|.{{ResizeObserverEntry/scrollSize}} if |observation|.{{ResizeObservation/observedBox}} is "scroll-box"
-
-            4. Matching size is |entry|.{{ResizeObserverEntry/devicePixelBorderBoxSize}}
+            3. Matching size is |entry|.{{ResizeObserverEntry/devicePixelBorderBoxSize}}
                 if |observation|.{{ResizeObservation/observedBox}} is "device-pixel-border-box"
 
         4. Set |targetDepth| to the result of <a>calculate depth for node</a> for |observation|.{{ResizeObservation/target}}.
@@ -552,13 +538,7 @@ To <dfn>calculate box size</dfn>, given |target| and |specificSize|, run these s
 
             2. Set |computedSize|.blockSize to target's <a>content area</a> block length.
 
-        3. If |specificSize| is "scoll-box"
-
-            1. Set |computedSize|.inlineSize to target's <a>scrollport</a> inline size.
-
-            2. Set |computedSize|.blockSize to target's <a>scrollport</a> block size.
-
-        4. return |computedSize|.
+        3. return |computedSize|.
 
 <h3 id="lifetime">ResizeObserver Lifetime</h3>