Implement and ship PushManager.supportedContentEncodings

third_party/WebKit/Source/modules/push_messaging/PushManager.h

 // 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.
 
 #ifndef PushManager_h
 #define PushManager_h
 
 #include "modules/ModulesExport.h"
 #include "platform/bindings/ScriptWrappable.h"
 #include "platform/heap/Handle.h"
 
 namespace blink {
 
 class ExceptionState;
 class PushSubscriptionOptionsInit;
 class ScriptPromise;
 class ScriptState;
 class ServiceWorkerRegistration;
 
 class MODULES_EXPORT PushManager final : public GarbageCollected<PushManager>,
                                          public ScriptWrappable {
   DEFINE_WRAPPERTYPEINFO();
 
  public:
   static PushManager* Create(ServiceWorkerRegistration* registration) {
     return new PushManager(registration);
   }
 
+  // Web-exposed property:
+  static Vector<String> supportedContentEncodings();
+
+  // Web-exposed methods:
   ScriptPromise subscribe(ScriptState*,
                           const PushSubscriptionOptionsInit&,
                           ExceptionState&);
   ScriptPromise getSubscription(ScriptState*);
   ScriptPromise permissionState(ScriptState*,
                                 const PushSubscriptionOptionsInit&,
                                 ExceptionState&);
 
   DECLARE_TRACE();
 
  private:
   explicit PushManager(ServiceWorkerRegistration*);
 
   Member<ServiceWorkerRegistration> registration_;
 };
 
 }  // namespace blink
 
 #endif  // PushManager_h