Move Push-related Blink API headers into their own directory.

public/platform/WebPushProvider.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 WebPushProvider_h
-#define WebPushProvider_h
-
-#include "public/platform/WebCallbacks.h"
-#include "public/platform/WebCommon.h"
-#include "public/platform/WebPushPermissionStatus.h"
-
-namespace blink {
-
-class WebServiceWorkerRegistration;
-struct WebPushError;
-struct WebPushSubscription;
-
-using WebPushSubscriptionCallbacks = WebCallbacks<WebPushSubscription, WebPushError>;
-// FIXME: Remove when no longer used by the embedder - https://crbug.com/446883.
-using WebPushRegistrationCallbacks = WebPushSubscriptionCallbacks;
-using WebPushPermissionStatusCallbacks = WebCallbacks<WebPushPermissionStatus, void>;
-using WebPushUnsubscribeCallbacks = WebCallbacks<bool, WebPushError>;
-// FIXME: Remove when no longer used by the embedder - https://crbug.com/446883.
-using WebPushUnregisterCallbacks = WebPushUnsubscribeCallbacks;
-
-class WebPushProvider {
-public:
-    virtual ~WebPushProvider() { }
-
-    // Takes ownership of the WebPushRegistrationCallbacks.
-    // Does not take ownership of the WebServiceWorkerRegistration.
-    virtual void registerPushMessaging(WebServiceWorkerRegistration*, WebPushRegistrationCallbacks*) { BLINK_ASSERT_NOT_REACHED(); }
-
-    // Takes ownership of the WebPushRegistrationCallbacks.
-    // Does not take ownership of the WebServiceWorkerRegistration.
-    virtual void getRegistration(WebServiceWorkerRegistration*, WebPushRegistrationCallbacks*) { BLINK_ASSERT_NOT_REACHED(); }
-
-    // Takes ownership of the WebPushPermissionStatusCallbacks.
-    // Does not take ownership of the WebServiceWorkerRegistration.
-    virtual void getPermissionStatus(WebServiceWorkerRegistration*, WebPushPermissionStatusCallbacks*) { BLINK_ASSERT_NOT_REACHED(); }
-
-    // Takes ownership if the WebPushUnregisterCallbacks.
-    // Does not take ownership of the WebServiceWorkerRegistration.
-    virtual void unregister(WebServiceWorkerRegistration*, WebPushUnregisterCallbacks* callback) { BLINK_ASSERT_NOT_REACHED(); }
-};
-
-} // namespace blink
-
-#endif // WebPushProvider_h
+#include "public/platform/modules/push_messaging/WebPushProvider.h"