Merge the Sky Engine changes from the SkyDart branch

sky/engine/core/css/FontFaceSet.idl

Index: sky/engine/core/css/FontFaceSet.idl
diff --git a/sky/engine/core/css/FontFaceSet.idl b/sky/engine/core/css/FontFaceSet.idl
index c88d24f6407d4dfed1736dd6cf9ac9db5a671938..e1ca94c43461f20c8bf70bed8e992a6ad59f98c7 100644
--- a/sky/engine/core/css/FontFaceSet.idl
+++ b/sky/engine/core/css/FontFaceSet.idl
@@ -37,13 +37,10 @@ enum FontFaceSetLoadStatus { "loading", "loaded" };
 ] interface FontFaceSet : EventTarget {
 
     [RaisesException] boolean check(DOMString font, optional DOMString text = null);
-    [CallWith=ScriptState] Promise load(DOMString font, optional DOMString text = null);
-    [MeasureAs=FontFaceSetReady, CallWith=ScriptState] Promise ready();
 
     [RaisesException] void add(FontFace fontFace);
     void clear();
     [RaisesException, ImplementedAs=remove] boolean delete(FontFace fontFace);
-    void forEach(FontFaceSetForEachCallback callback, optional any thisArg);
     [RaisesException] boolean has(FontFace fontFace);
 
     readonly attribute unsigned long size;