[Presentation API] (4th)(1-UA blink side) Add WebPresentationConnection and WebPresentationConnecti…

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

+// Copyright 2017 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 WebPresentationConnectionCallbacks_h
+#define WebPresentationConnectionCallbacks_h
+
+#include "public/platform/WebCallbacks.h"
+#include "public/platform/WebCommon.h"
+
+namespace blink {
+
+class WebPresentationConnection;
+struct WebPresentationError;
+struct WebPresentationSessionInfo;
+
+// If session was created, callback's onSuccess() is invoked with the
+// information about the presentation session created by the embedder.
+// Otherwise, onError() is invoked with the error code and message.
+class WebPresentationConnectionCallbacks
+    : public WebCallbacks<const WebPresentationSessionInfo&,
+                          const WebPresentationError&> {
+ public:
+  // Returns newly created PresentationConnection object if
+  // WebCallbacks::onSuccess() has been called.
+  virtual WebPresentationConnection* getConnection() = 0;
+};
+
+}  // namespace blink
+
+#endif  // WebPresentationConnectionCallbacks_h