Sync the DOM* geometry interfaces with the spec

Source/core/dom/DOMRect.idl

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+// http://dev.w3.org/fxtf/geometry/#DOMRect
+
 [
     Constructor(optional unrestricted double x = 0,
                 optional unrestricted double y = 0,
                 optional unrestricted double width = 0,
                 optional unrestricted double height = 0),
+    // FIXME: Exposed=(Window,Worker)
     RuntimeEnabled=GeometryInterfaces,
 ] interface DOMRect : DOMRectReadOnly {
-    attribute unrestricted double x;
-    attribute unrestricted double y;
-    attribute unrestricted double width;
-    attribute unrestricted double height;
+    inherit attribute unrestricted double x;
+    inherit attribute unrestricted double y;
+    inherit attribute unrestricted double width;
+    inherit attribute unrestricted double height;
 };