[Presentation API] 1-UA: notify receiver page when receiver connection becomes available (blink sid…

third_party/WebKit/public/platform/modules/presentation/WebPresentationReceiver.h

+// Copyright 2016 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 WebPresentationReceiver_h
+#define WebPresentationReceiver_h
+
+#include "public/platform/WebCommon.h"
+
+namespace blink {
+
+class WebPresentationConnectionClient;
+
+// The delegate Blink provides to WebPresentationReceiverClient in order to get updates.
+class BLINK_PLATFORM_EXPORT WebPresentationReceiver {
+public:
+    virtual ~WebPresentationReceiver() = default;
+
+    // Called when receiver page gets an incoming connection.
+    virtual void onReceiverConnectionAvailable(WebPresentationConnectionClient*) = 0;
+};
+
+} // namespace blink
+
+#endif // WebPresentationReceiver_h