[ABANDONED] Implement Promises.

Source/core/dom/Promise.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 10 matching lines @@
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  * 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.
  */
 
-// FIXME: The spec doesn't provide details about constructor, yet.
-// See also, https://github.com/WebAudio/web-midi-api/issues/1 .
 [
-    EnabledAtRuntime=webMIDI,
-    ConstructorTemplate=Event
-] interface MIDIMessageEvent : Event {
-    [InitializedByEventConstructor] readonly attribute double receivedTime;
-    [InitializedByEventConstructor] readonly attribute Uint8Array data;
+   CustomConstructor(any init),
+   EnabledAtRuntime=promise
+] interface Promise {
+    [Custom] static Promise fulfill(any value);
+    [Custom] static Promise resolve(any value);
+    [Custom] static Promise reject(any value);
+    [Custom] static Promise any(any... values); 
+    [Custom] static Promise every(any... values);
+    [Custom] static Promise some(any... values);
+
+    [Custom] Promise then(AnyCallback acceptCallback, AnyCallback rejectCallback);
+    [Custom] Promise catch(AnyCallback rejectCallback);
 };