[Media Router] Add DialMediaSinkService and DeviceDescriptionService

chrome/common/media_router/discovery/media_sink_service.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_MEDIA_SINK_SERVICE_H_
-#define CHROME_BROWSER_MEDIA_ROUTER_MEDIA_SINK_SERVICE_H_
+#ifndef CHROME_COMMON_MEDIA_ROUTER_DISCOVERY_MEDIA_SINK_SERVICE_H_
+#define CHROME_COMMON_MEDIA_ROUTER_DISCOVERY_MEDIA_SINK_SERVICE_H_
 
 #include <memory>
 #include <vector>
 
 #include "base/callback.h"
+#include "chrome/common/media_router/discovery/media_sink_internal.h"
 #include "chrome/common/media_router/media_sink.h"
 
 namespace media_router {
 
-class MediaSinksObserver;
-
 // A service which can be used to start background discovery and resolution of
 // MediaSinks. Often these are remote devices, like Chromecast. In addition, the
 // service is capable of answering MediaSink queries using the sinks that it
 // generated.
 // This class is not thread safe. All methods must be called from the IO thread.
 class MediaSinkService {
  public:
   // Callback to be invoked when this class finishes sink discovering.
   // Arg 0: Sinks discovered and resolved by the service.
   using OnSinksDiscoveredCallback =
-      base::Callback<void(const std::vector<MediaSink>&)>;
+      base::Callback<void(const std::vector<MediaSinkInternal>&)>;
 
   explicit MediaSinkService(
-      const OnSinksDiscoveredCallback& sinks_discovered_callback);
+      const OnSinksDiscoveredCallback& sink_discovery_callback);
 
   virtual ~MediaSinkService();
 
   // Starts sink discovery. No-ops if already started.
   // Sinks discovered and resolved are continuously passed to
   // |callback|.
   virtual void Start() = 0;
 
-  // Adds a sink query to observe for MediaSink updates.
-  // Multiple observers can be added for a given MediaSource.
-  // Start() must be called first. This class does not take
-  // ownership of |observer|.
-  virtual void AddSinkQuery(MediaSinksObserver* observer) = 0;
-
-  // Removes a sink query and stops observing MediaSink updates. No-op if
-  // |observer| is not registered with this class.
-  virtual void RemoveSinkQuery(MediaSinksObserver* observer) = 0;
-
  protected:
-  OnSinksDiscoveredCallback sinks_discovered_callback_;
+  OnSinksDiscoveredCallback sink_discovery_callback_;
 
   DISALLOW_COPY_AND_ASSIGN(MediaSinkService);
 };
 
 }  // namespace media_router
 
-#endif  // CHROME_BROWSER_MEDIA_ROUTER_MEDIA_SINK_SERVICE_H_
+#endif  // CHROME_COMMON_MEDIA_ROUTER_DISCOVERY_MEDIA_SINK_SERVICE_H_