WIP don't review: Implement Future

Source/core/dom/Future.idl

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 11 matching lines @@
  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 [
-    NoInterfaceObject,
     ActiveDOMObject,
-    EventTarget
-] interface MIDIInput : MIDIPort {
-    attribute EventListener onmidimessage;
+    CustomConstructor(FutureInit init)
+] interface Future {
+    static Future accept(any value);
+    static Future resolve(any value); // same as any(value)
+    static Future reject(any value);
+
+    static Future anyof(any... values); // exposed as "any" in JavaScript, without "_"
+    static Future every(any... values);
+    static Future some(any... values);
+
+    [Custom] Future then(AnyCallback acceptCallback, AnyCallback rejectCallback);
+    [Custom] Future catch(AnyCallback rejectCallback);
+    [Custom] void done(AnyCallback acceptCallback, AnyCallback rejectCallback);
 };