[cssom][css-images][css-conditional] Re-up and apply the patch from w3c#473, switching CSS from interface to namespace. Closes w3c#437.

Author: tabatkins

css-conditional-3/Overview.bs

@@ -999,12 +999,12 @@ interface CSSDocumentRule : CSSConditionRule {
 
 The CSS interface, and the supports() function
 
-The {{CSS}} interface holds useful CSS-related functions that do not belong elsewhere.
+The {{CSS}} namespace holds useful CSS-related functions that do not belong elsewhere.
 
 
-partial interface CSS {
-  static boolean supports(CSSOMString property, CSSOMString value);
-  static boolean supports(CSSOMString conditionText);
+partial namespace CSS {
+  boolean supports(CSSOMString property, CSSOMString value);
+  boolean supports(CSSOMString conditionText);
 };
 
 

css-images-4/Overview.bs

@@ -685,11 +685,13 @@ Using Out-Of-Document Sources: the ElementSources interface
 	The elementSources Map object provides this.
 
 	
-		partial interface CSS {
-			[SameObject] readonly attribute Map elementSources;
+		partial namespace CSS {
+			// [SameObject] readonly attribute Map elementSources;
 		};
 	
 
+	Issue(428): IDL namespaces don't support attributes yet.
+
 	Any entries in the elementSources map with a string key
 	and a value that is an object providing a paint source
 	are made available to the ''element()'' function.

cssom-1/Overview.bs

@@ -2812,16 +2812,23 @@ Utility APIs {#utility-apis}
 The CSS.escape() Method {#the-css.escape()-method}
 ------------------------------------------------------
 
-The CSS interface holds useful CSS-related functions that do not belong elsewhere.
+The CSS namespace holds useful CSS-related functions that do not belong elsewhere.
 
 
 [Exposed=Window]
-interface CSS {
-  static CSSOMString escape(CSSOMString ident);
+namespace CSS {
+  CSSOMString escape(CSSOMString ident);
 };
 
 
-The escape(ident) method must return the result of invoking serialize an identifier of
+Issue: This was previously specified as an IDL interface
+that only held static methods.
+Switching to an IDL namespace is *nearly* identical,
+so it's expected that there won't be any compat concerns.
+If any are discovered, please report
+so we can consider reverting this change.
+
+The escape(ident) operation must return the result of invoking serialize an identifier of
 ident.
 
 
@@ -2835,7 +2842,7 @@ The escape(ident) method must return the re
  var element = document.querySelector('a[href="#' + CSS.escape(fragment) + '"]');
 
 
-Specifications that define static functions on the {{CSS}} interface and want to
+Specifications that define operations on the {{CSS}} namespace and want to
 store some state should store the state on the current global
 object's associated Document.