[Media Router] Add MediaSink subtypes

chrome/browser/media/router/cast_media_sink.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 CHROME_BROWSER_MEDIA_ROUTER_CAST_MEDIA_SINK_H_
+#define CHROME_BROWSER_MEDIA_ROUTER_CAST_MEDIA_SINK_H_
+
+#include "chrome/browser/media/router/media_sink.h"
+
+namespace media_router {
+
+// Represents a cast sink to which media can be routed.
+class CastMediaSink : public MediaSink {
+ public:
+  CastMediaSink(const MediaSink::Id& sink_id,
+                const std::string& name,
+                const IconType icon_type);
+  CastMediaSink(const CastMediaSink& other);
+  ~CastMediaSink();
+
+  int capabilities() const { return capabilities_; }
+  void set_capabilities(int capabilities) { capabilities_ = capabilities; }
+  const std::string& ip_address() const { return ip_address_; }
+  void set_ip_address(const std::string& ip_address) {
+    ip_address_ = ip_address;
+  }
+  int cast_channel_id() const { return cast_channel_id_; }
+  void set_cast_channel_id(int cast_channel_id) {
+    cast_channel_id_ = cast_channel_id;
+  }
+
+  // Used by mojo.
+  static const CastMediaSink* Cast(const MediaSink* sink);
+  static CastMediaSink* Cast(MediaSink* sink);
+
+ private:
+  int capabilities_;

[imcheng, 2017/02/08 01:28:08]

Please add a comment:

// A bit vector representing the capabilities of the sink.

Note: we may have to define capability as an enum in the future.

[zhaobin, 2017/02/09 00:13:52]

Done.

+
+  // Used for feedback

[imcheng, 2017/02/08 01:28:08]

We probably don't need this comment.

[zhaobin, 2017/02/09 00:13:52]

Done.

+  std::string ip_address_;
+
+  // ID of cast channel opened by Media Router. The ID can be

[imcheng, 2017/02/08 01:28:08]

// ID of Cast channel opened for the sink.

[zhaobin, 2017/02/09 00:13:52]

Done.

+  // used to send call chrome.cast.channel.send.
+  int cast_channel_id_;
+};
+
+}  // namespace media_router
+
+#endif  // CHROME_BROWSER_MEDIA_ROUTER_CAST_MEDIA_SINK_H_