[Presentation API] Remove closed connections from PresentationConnectionList

content/renderer/presentation/presentation_connection_proxy.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 CONTENT_RENDERER_PRESENTATION_PRESENTATION_CONNECTION_PROXY_H_
 #define CONTENT_RENDERER_PRESENTATION_PRESENTATION_CONNECTION_PROXY_H_
 
 #include "base/callback.h"
 #include "content/public/common/presentation_connection_message.h"
 #include "mojo/public/cpp/bindings/binding.h"
@@ skipping 98 matching lines @@
   ~ControllerConnectionProxy() override;
 
   blink::mojom::PresentationConnectionPtr Bind();
   blink::mojom::PresentationConnectionRequest MakeRemoteRequest();
 };
 
 // Represents PresentationConnectionProxy object on receiver frame.
 class CONTENT_EXPORT ReceiverConnectionProxy
     : public PresentationConnectionProxy {
  public:
+  // Invoked when |source_connection_| transition to 'closed' state. Remove
+  // |source_connection_| from blink PresentationReceiver's connection list.

[mark a. foltz, 2017/05/12 22:22:19]

nit: s/blink//

[zhaobin, 2017/05/15 17:46:03]

Done.

+  using OnConnectionClosedCallback = base::Callback<void()>;
+
   explicit ReceiverConnectionProxy(
-      blink::WebPresentationConnection* receiver_connection);
+      blink::WebPresentationConnection* receiver_connection,
+      const OnConnectionClosedCallback& connection_closed_callback);
   ~ReceiverConnectionProxy() override;
 
   void Bind(
       blink::mojom::PresentationConnectionRequest receiver_connection_request);
 
   // Sets |target_connection_ptr_| to |controller_connection_ptr|. Should be
   // called only once.
   void BindControllerConnection(
       blink::mojom::PresentationConnectionPtr controller_connection_ptr);
+
+  // PresentationConnectionProxy override
+  void DidChangeState(content::PresentationConnectionState state) override;
+
+ private:
+  // See comments for |OnConnectionClosedCallback|.
+  OnConnectionClosedCallback connection_closed_callback_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_PRESENTATION_PRESENTATION_CONNECTION_PROXY_H_