[Media Router] Increment the media's current_time in the WebUI route controller

chrome/common/media_router/media_status.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_COMMON_MEDIA_ROUTER_MEDIA_STATUS_H_
 #define CHROME_COMMON_MEDIA_ROUTER_MEDIA_STATUS_H_
 
 #include <string>
 
 #include "base/time/time.h"
 
 namespace media_router {
 
 // Represents the current state of a media content.
 struct MediaStatus {
  public:
+  enum class PlayState { PLAYING, PAUSED, BUFFERING };
+
   MediaStatus();
   MediaStatus(const MediaStatus& other);
   ~MediaStatus();
 
   MediaStatus& operator=(const MediaStatus& other);
   bool operator==(const MediaStatus& other) const;
 
   // The main title of the media. For example, in a MediaStatus representing
   // a YouTube Cast session, this could be the title of the video.
   std::string title;
 
   // Text describing the media, or a secondary title. For example, in a
   // MediaStatus representing a YouTube Cast session, this could be "YouTube".
   std::string description;
 
   // If this is true, the media can be played and paused.
   bool can_play_pause = false;
 
   // If this is true, the media can be muted and unmuted.
   bool can_mute = false;
 
   // If this is true, the media's volume can be changed.
   bool can_set_volume = false;
 
   // If this is true, the media's current playback position can be changed.
   bool can_seek = false;
 
-  bool is_paused = false;
+  PlayState play_state = PlayState::PLAYING;
 
   bool is_muted = false;
 
   // Current volume of the media, with 1 being the highest and 0 being the
   // lowest/no sound. When |is_muted| is true, there should be no sound
   // regardless of |volume|.
   float volume = 0;
 
   // The length of the media. A value of zero indicates that this is a media
   // with no set duration (e.g. a live stream).
   base::TimeDelta duration;
 
   // Current playback position. Must be less than or equal to |duration|.
   base::TimeDelta current_time;
 };
 
 }  // namespace media_router
 
 #endif  // CHROME_COMMON_MEDIA_ROUTER_MEDIA_STATUS_H_