CSS Font Loading: drop readonly to use Setlike functionalities

third_party/WebKit/Source/core/css/FontFaceSet.idl

Index: third_party/WebKit/Source/core/css/FontFaceSet.idl
diff --git a/third_party/WebKit/Source/core/css/FontFaceSet.idl b/third_party/WebKit/Source/core/css/FontFaceSet.idl
index 9e5fc9ccd048afb08ac246256b9d410eb16a9b05..ce3eb1d34dd8038e33f308f9cb6bcb1a5980b889 100644
--- a/third_party/WebKit/Source/core/css/FontFaceSet.idl
+++ b/third_party/WebKit/Source/core/css/FontFaceSet.idl
@@ -39,13 +39,8 @@ enum FontFaceSetLoadStatus { "loading", "loaded" };
     SetWrapperReferenceFrom=document,
     NoInterfaceObject,
 ] interface FontFaceSet : EventTarget {
-    // TODO(toyoshim): Drop 'readonly' to use setlike's add, delete, and clear.
-    readonly setlike<FontFace>;
+    setlike<FontFace>;
     readonly attribute unsigned long size;
-    // TODO(philipj): add() should return the FontFaceSet.
-    [RaisesException] void add(FontFace fontFace);
-    [RaisesException, ImplementedAs=remove] boolean delete(FontFace fontFace);
-    void clear();
 
     // events for when loading state changes
     attribute EventHandler onloading;