Correct condition and flag state for skipping PLAY request.

ui/file_manager/video_player/js/cast/cast_video_element.js

 // Copyright 2014 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.
 
 'use strict';
 
 /**
  * Interval for updating media info (in ms).
  * @type {number}
  * @const
@@ skipping 206 matching lines @@
 
   /**
    * Plays the video.
    * @param {boolean=} opt_seeking True when seeking. False otherwise.
    */
   play: function(opt_seeking) {
     if (this.playInProgress_)
       return;
 
     var play = function() {
+      // If the casted media is already playing and a pause request is not in
+      // progress, we can skip this play request.
       if (this.castMedia_.playerState ===
-              chrome.cast.media.PlayerState.PLAYING) {
+              chrome.cast.media.PlayerState.PLAYING &&
+          !this.pauseInProgress_) {
+        this.playInProgress_ = false;
         return;
       }
 
       var playRequest = new chrome.cast.media.PlayRequest();
       playRequest.customData = {seeking: !!opt_seeking};
 
       this.castMedia_.play(
           playRequest,
           function() {
             this.playInProgress_ = false;
@@ skipping 249 matching lines @@
       this.dispatchEvent(new Event('durationchange'));
     }
 
     // Media is being unloaded.
     if (!alive) {
       this.unloadMedia_();
       return;
     }
   },
 };