Revert of AudioPlayer: Update control panel with playback progress bar.

ui/file_manager/audio_player/elements/audio_player.js

Index: ui/file_manager/audio_player/elements/audio_player.js
diff --git a/ui/file_manager/audio_player/elements/audio_player.js b/ui/file_manager/audio_player/elements/audio_player.js
index 7b6cab4d7cfd521fa08d9c5739709061ef579766..3d5fc01410f187a30115251c438f044aed636760 100644
--- a/ui/file_manager/audio_player/elements/audio_player.js
+++ b/ui/file_manager/audio_player/elements/audio_player.js
@@ -94,12 +94,6 @@
   },
 
   /**
-   * The last playing state when user starts dragging the seek bar.
-   * @private {boolean}
-   */
-  wasPlayingOnDragStart_: false,
-
-  /**
    * Handles change event for shuffle mode.
    * @param {boolean} shuffle
    */
@@ -140,9 +134,6 @@
    */
   ready: function() {
     this.addEventListener('keydown', this.onKeyDown_.bind(this));
-
-    this.$.audioController.addEventListener('dragging-changed',
-        this.onDraggingChanged_.bind(this));
 
     this.$.audio.volume = 0;  // Temporary initial volume.
     this.$.audio.addEventListener('ended', this.onAudioEnded.bind(this));
@@ -405,24 +396,6 @@
   },
 
   /**
-   * Invoked when dragging state of seek bar on control panel is changed.
-   * During the user is dragging it, audio playback is paused temporalily.
-   */
-  onDraggingChanged_: function() {
-    if (this.$.audioController.dragging) {
-      if (this.playing) {
-        this.wasPlayingOnDragStart_ = true;
-        this.$.audio.pause();
-      }
-    } else {
-      if (this.wasPlayingOnDragStart_) {
-        this.$.audio.play();
-        this.wasPlayingOnDragStart_ = false;
-      }
-    }
-  },
-
-  /**
    * Invoked when the 'keydown' event is fired.
    * @param {Event} event The event object.
    */