Implement and ship PushManager.supportedContentEncodings

third_party/WebKit/Source/modules/push_messaging/PushManager.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.
 
 // https://w3c.github.io/push-api/#pushmanager-interface
 
 [
-    Exposed=(Window,ServiceWorker),
+    Exposed=(Window,Worker),
     RuntimeEnabled=PushMessaging,
 ] interface PushManager {
+    [SameObject, SaveSameObject]

[johnme, 2017/05/08 14:36:16]

Nit: why are these on a different line, but subscribe below isn't wrapped?

[Peter Beverloo, 2017/05/08 15:00:11]

Admittedly because I like being able to copy/paste the IDL defined in the
specification. The additions below are implementation-specific as they amend
which arguments are being passed to the implementation function. Do you feel
strongly?

[johnme, 2017/05/08 15:09:27]

Acknowledged.

+    static readonly attribute FrozenArray<DOMString> supportedContentEncodings;
+
     [CallWith=ScriptState, RaisesException] Promise<PushSubscription> subscribe(optional PushSubscriptionOptionsInit options);
     [CallWith=ScriptState] Promise<PushSubscription?> getSubscription();
     [CallWith=ScriptState, RaisesException] Promise permissionState(optional PushSubscriptionOptionsInit options);
 };