[Media Router] Add DialMediaSinkService and DeviceDescriptionService

chrome/browser/media/router/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_
 
 #include <memory>
 #include <vector>
 
@@ skipping 10 matching lines @@
 // 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>&)>;
 
   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_