Remove obsolete try/catch from media code.

This code was only relevant for pre-MR1 Jellybean, whereas Lollipop is
the oldest version of Android still supported.

Bug: none
Change-Id: I305551035a5dc12ce19843fbda22b8226ebd6cde
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2551676Reviewed-by: Mounir Lamouri <mlamouri@chromium.org>
Commit-Queue: Evan Stade <estade@chromium.org>
Cr-Commit-Position: refs/heads/master@{#832157}

chrome/android/java/src/org/chromium/chrome/browser/media/ui/ChromeMediaNotificationControllerDelegate.java

@@ -224,16 +224,9 @@ class ChromeMediaNotificationControllerDelegate implements MediaNotificationCont
 
     @Override
     public void onMediaSessionUpdated(MediaSessionCompat session) {
-        try {
-            // Tell the MediaRouter about the session, so that Chrome can control the volume
-            // on the remote cast device (if any).
-            // Pre-MR1 versions of JB do not have the complete MediaRouter APIs,
-            // so getting the MediaRouter instance will throw an exception.
-            MediaRouter.getInstance(getContext()).setMediaSessionCompat(session);
-        } catch (NoSuchMethodError e) {
-            // Do nothing. Chrome can't be casting without a MediaRouter, so there is nothing
-            // to do here.
-        }
+        // Tell the MediaRouter about the session, so that Chrome can control the volume
+        // on the remote cast device (if any).
+        MediaRouter.getInstance(getContext()).setMediaSessionCompat(session);
     }
 
     @Override