Add new action for launching the user's music player app.

android.intent.action.MUSIC_PLAYER

http://b/2237931

api/current.xml

@@ -130743,6 +130743,17 @@
  visibility="public"
 >
 </field>
+<field name="INTENT_ACTION_MUSIC_PLAYER"
+ type="java.lang.String"
+ transient="false"
+ volatile="false"
+ value="&quot;android.intent.action.MUSIC_PLAYER&quot;"
+ static="true"
+ final="true"
+ deprecated="not deprecated"
+ visibility="public"
+>
+</field>
 <field name="INTENT_ACTION_STILL_IMAGE_CAMERA"
  type="java.lang.String"
  transient="false"

core/java/android/provider/MediaStore.java

@@ -53,6 +53,13 @@ public final class MediaStore {
 
     private static final String CONTENT_AUTHORITY_SLASH = "content://" + AUTHORITY + "/";
 
+    /**
+     * Activity Action: Launch a music player.
+     * The activity should be able to play, browse, or manipulate music files stored on the device.
+     */
+    @SdkConstant(SdkConstantType.ACTIVITY_INTENT_ACTION)
+    public static final String INTENT_ACTION_MUSIC_PLAYER = "android.intent.action.MUSIC_PLAYER";
+
     /**
      * Activity Action: Perform a search for media.
      * Contains at least the {@link android.app.SearchManager#QUERY} extra.