[Files.app] Initial implementation of new audio player

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index 55f7500f3cfa65cdd9a66c187b8e88366f431c64..69ea2ba696e90b39dcf179380b149a924e3ef24a 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -12092,6 +12092,12 @@ Some features may be unavailable.  Please check that the profile exists and you
       <message name="IDS_FLAGS_FILE_MANAGER_SHOW_CHECKBOXES_DESCRIPTION" desc="Description of the about:flag option to show the selecting checkboxes to the Files app.">
         Show selecting checkboxes in the Files.app.
       </message>
+      <message name="IDS_FLAGS_FILE_MANAGER_ENABLE_NEW_AUDIO_PLAYER_NAME" desc="Name of the about:flag option to enable the new audio player app.">
+        Enable the new audio player
+      </message>
+      <message name="IDS_FLAGS_FILE_MANAGER_ENABLE_NEW_AUDIO_PLAYER_DESCRIPTION" desc="Description of the about:flag option to the enable new audio player app.">
+        Use the experimental new audio player instead of the stable one.
+      </message>
       <message name="IDS_FLAGS_FILE_MANAGER_ENABLE_WEBSTORE_INTEGRATION" desc="Name of the about:flag option to enable the webstore integration feature in Files app.">
         Enable the integration of Webstore and Files.app.
       </message>