[cssom] Remove CSSStyleDeclaration.setPropertyPriority and CSSStyleDeclaration.setPropertyValue due to lack of interest from implementations.

Fixes w3c#2680

Author: emilio

cssom-1/Overview.bs

@@ -2093,8 +2093,6 @@ interface CSSStyleDeclaration {
   CSSOMString getPropertyValue(CSSOMString property);
   CSSOMString getPropertyPriority(CSSOMString property);
   [CEReactions] void setProperty(CSSOMString property, [TreatNullAs=EmptyString] CSSOMString value, [TreatNullAs=EmptyString] optional CSSOMString priority = "");
-  [CEReactions] void setPropertyValue(CSSOMString property, [TreatNullAs=EmptyString] CSSOMString value);
-  [CEReactions] void setPropertyPriority(CSSOMString property, [TreatNullAs=EmptyString] CSSOMString priority);
   [CEReactions] CSSOMString removeProperty(CSSOMString property);
   readonly attribute CSSRule? parentRule;
   [CEReactions] attribute [TreatNullAs=EmptyString] CSSOMString cssFloat;
@@ -2215,76 +2213,6 @@ a list of declarations <var>declarations</var>, follow these steps:
  Otherwise, unset <var>declaration</var>'s <a for="CSS declaration">important flag</a>.
 </ol>
 
-The <dfn method for=CSSStyleDeclaration>setPropertyValue(<var>property</var>, <var>value</var>)</dfn> method must run these
-steps:
-<ol>
- <li>If the <a for="CSSStyleDeclaration">readonly flag</a> is set,
- then <a>throw</a> a {{NoModificationAllowedError}} exception.
- <li>If <var>property</var> is not a <a>custom property</a>, follow these substeps:
-  <ol>
-   <li>Let <var>property</var> be <var>property</var> <a lt="ASCII lowercase">converted to ASCII lowercase</a>.
-   <li>If <var>property</var> is not a <a>case-sensitive</a> match for a <a>supported CSS property</a>, then return.
-  </ol>
- <li>If <var>value</var> is the empty string, invoke {{CSSStyleDeclaration/removeProperty()}}
- with <var>property</var> as argument and return.
- <li>
-  Let <var>component value list</var> be the result of <a lt="parse a CSS value">parsing</a> <var>value</var> for property <var>property</var>.
-
-  Note: <var>value</var> can not include "<code>!important</code>".
-
- <li>If <var>component value list</var> is null, then return.
- <li>If <var>property</var> is a shorthand property, then for each longhand property <var>longhand</var> that <var>property</var> maps to, in canonical
- order, <a lt="set a CSS declaration value">set the CSS declaration value</a> <var>longhand</var> to the appropriate value(s) from <var>component
- value list</var>, and with the list of declarations being the <a for="CSSStyleDeclaration">declarations</a>.
- <li>Otherwise, <a lt="set a CSS declaration value">set the CSS declaration value</a> <var>property</var> to the value <var>component value
- list</var>, and with the list of declarations being the <a for="CSSStyleDeclaration">declarations</a>.
- <li><a>Update style attribute for</a> the <a>CSS declaration block</a>.
-</ol>
-
-To <dfn>set a CSS declaration value</dfn> to a value <var>component value list</var> in a list of declarations <var>declarations</var>, follow these steps:
-
-<ol>
- <li>If <var>property</var> is a <a>case-sensitive</a> match for a <a for="CSS declaration">property
- name</a> of a <a>CSS declaration</a> in <var>declarations</var>, let <var>declaration</var> be that <a>CSS declaration</a>.
- <li>Otherwise, append a new <a>CSS declaration</a> with the <a for="CSS declaration">property name</a> <var>property</var>
- to <var>declarations</var> and let <var>declaration</var> be that <a>CSS declaration</a>.
- <li>Set <var>declaration</var>'s <a for="CSS declaration">value</a> to <var>component value list</var>.
-</ol>
-
-The <dfn method for=CSSStyleDeclaration>setPropertyPriority(<var>property</var>, <var>priority</var>)</dfn> method must run
-these steps:
-
-<ol>
- <li>If the <a for="CSSStyleDeclaration">readonly flag</a> is set,
- then <a>throw</a> a {{NoModificationAllowedError}} exception.
- <li>If <var>property</var> is not a <a>custom property</a>, follow these substeps:
-  <ol>
-   <li>Let <var>property</var> be <var>property</var> <a lt="ASCII lowercase">converted to ASCII lowercase</a>.
-   <li>If <var>property</var> is not a <a>case-sensitive</a> match for a <a>supported CSS property</a>, then return.
-  </ol>
- <li>If <var>priority</var> is not the empty string and is not an <a>ASCII case-insensitive</a> match for the string
- "<code>important</code>", then return.
- <li>If <var>property</var> is a shorthand property, then for each longhand property <var>longhand</var> that <var>property</var> maps to, in canonical
- order, <a lt="set a CSS declaration priority">set the CSS declaration priority</a> <var>longhand</var> with the <i>important</i> flag set if
- <var>priority</var> is not the empty string, and unset otherwise, and with the list of declarations being the
- <a for="CSSStyleDeclaration">declarations</a>.
- <li>Otherwise, <a lt="set a CSS declaration priority">set the CSS declaration priority</a> <var>property</var> with the <i>important</i> flag set
- if <var>priority</var> is not the empty string, and unset otherwise, and with the list of declarations being the
- <a for="CSSStyleDeclaration">declarations</a>.
- <li><a>Update style attribute for</a> the <a>CSS declaration block</a>.
-</ol>
-
-To <dfn>set a CSS declaration priority</dfn> <var>property</var> optionally with an <i>important</i> flag set, in a list of declarations
-<var>declarations</var>, follow these steps:
-
-<ol>
- <li>If <var>property</var> is a <a>case-sensitive</a> match for a <a for="CSS declaration">property
- name</a> of a <a>CSS declaration</a> in <var>declarations</var>, let <var>declaration</var> be that <a>CSS declaration</a>.
- <li>Otherwise, return.
- <li>If the <i>important</i> flag is set, set <var>declaration</var>'s <a for="CSS declaration">important flag</a>. Otherwise,
- unset <var>declaration</var>'s <a for="CSS declaration">important flag</a>.
-</ol>
-
 The <dfn method for=CSSStyleDeclaration>removeProperty(<var>property</var>)</dfn> method must run these steps:
 <ol>
  <li>If the <a for="CSSStyleDeclaration">readonly flag</a> is set,
@@ -2986,6 +2914,7 @@ Changes From 5 December 2013 {#changes-from-5-december-2013}
 * Serialization of :lang() is changed.
 * Serialization of <<color>> and <<number>> is changed.
 * {{CSSStyleDeclaration/setProperty()}} on {{CSSStyleDeclaration}} is changed.
+* <code>setPropertyValue</code> and <code>setPropertyPriority</code> are removed from {{CSSStyleDeclaration}} due to lack of interest from implementations.
 
 
 Changes From 12 July 2011 To 5 December 2013 {#changes-from-12-july-2011-to-5-december-2013}
@@ -3006,8 +2935,7 @@ Changes From 12 July 2011 To 5 December 2013 {#changes-from-12-july-2011-to-5-de
  <li>Shorthands are now supported in {{CSSStyleDeclaration/setProperty()}},
  {{CSSStyleDeclaration/getPropertyValue()}}, et al.
 
- <li>{{CSSStyleDeclaration/setPropertyValue()}} and
- {{CSSStyleDeclaration/setPropertyPriority()}} are introduced.
+ <li><code>setPropertyValue</code> and <code>setPropertyPriority</code> are added to {{CSSStyleDeclaration}}.
 
  <li>The <code>style</code> and <code>media</code> attributes of various interfaces are annotated with the <code>[PutForwards]</code> WebIDL
  extended attribute.