Audio Player: Move <script> inside the <dom-module>

This is a preparation to auto-generate the JS module using
polymer_modulizer() which requires the <script> tag to be inside the
<dom-module>.

This has no impact in the Polymer element behavior.

Bug: 1133186
Change-Id: I97102f37502bd35eb7110a59633a627f022598dc
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2470062
Auto-Submit: Luciano Pacheco <lucmult@chromium.org>
Reviewed-by: Jeremie Boulic <jboulic@chromium.org>
Commit-Queue: Luciano Pacheco <lucmult@chromium.org>
Cr-Commit-Position: refs/heads/master@{#818830}

ui/file_manager/audio_player/elements/audio_player.html

@@ -36,6 +36,6 @@
     <audio id="audio"
         volume="[[computeAudioVolume_(volume)]]"></audio>
   </template>
-</dom-module>
 
-<script src="audio_player.js"></script>
+  <script src="audio_player.js"></script>
+</dom-module>

ui/file_manager/audio_player/elements/control_panel.html

@@ -75,6 +75,6 @@
       </div>
     </div>
   </template>
-</dom-module>
 
-<script src="control_panel.js"></script>
+  <script src="control_panel.js"></script>
+</dom-module>

ui/file_manager/audio_player/elements/track_info_panel.html

@@ -28,6 +28,7 @@
       </div>
     </div>
   </template>
+
+  <script src="track_info_panel.js"></script>
 </dom-module>
 
-<script src="track_info_panel.js"></script>

ui/file_manager/audio_player/elements/track_list.html

@@ -22,6 +22,6 @@
       </div>
     </template>
   </template>
-</dom-module>
 
-<script src="track_list.js"></script>
+  <script src="track_list.js"></script>
+</dom-module>