JS IDL2K better callbacks support + bugfixes according to review

libraries/idl/org.w3c.dom.css.ext.idl

@@ -93,7 +93,7 @@ partial interface CSSStyleDeclaration {
     attribute String flexGrow;
     attribute String flexShrink;
     attribute String flexWrap;
-    attribute String float;
+    attribute String cssFloat;
     attribute String font;
     attribute String fontFamily;
     attribute String fontFeatureSettings;

libraries/idl/org.w3c.dom.idl

@@ -5100,4 +5100,10 @@ dictionary EditingInputEventInit : EventInit {
   DOMString command;
   DOMString value;
 };
+partial interface Window {
+  long requestAnimationFrame(FrameRequestCallback callback);
+  void cancelAnimationFrame(long handle);
+};
+
+callback FrameRequestCallback = void (DOMHighResTimeStamp time);
 

libraries/idl/org.w3c.time.idl

@@ -0,0 +1,8 @@
+namespace org.w3c.time;
+
+
+typedef double DOMHighResTimeStamp;
+partial interface Performance {
+  DOMHighResTimeStamp now();
+};
+

libraries/idl/org.w3c.webidl.idl

@@ -0,0 +1,7 @@
+namespace org.w3c.webidl;
+
+/** written by WebIDL spec */
+
+typedef unsigned long long DOMTimeStamp;
+callback Function = any (any... arguments);
+callback VoidFunction = void ();