Hide seekbar when control bar scrim is expanded

And show it when the scrim is collapsed

Fixes: 142089940
Test: manual
Change-Id: I77504d86736e8d694865de2cf8d6366efe3ef513
diff --git a/src/com/android/car/media/PlaybackFragment.java b/src/com/android/car/media/PlaybackFragment.java
index 20598e7..daafd3b 100644
--- a/src/com/android/car/media/PlaybackFragment.java
+++ b/src/com/android/car/media/PlaybackFragment.java
@@ -379,8 +379,10 @@
 
             if (expanding) {
                 ViewUtils.showViewAnimated(mControlBarScrim, millis);
+                ViewUtils.hideViewAnimated(mSeekBar, millis);
             } else {
                 ViewUtils.hideViewAnimated(mControlBarScrim, millis);
+                ViewUtils.showViewAnimated(mSeekBar, millis);
             }
 
             if (!mQueueIsVisible) {