Roll Media App from DYU_0-Aok... to xO6b6gm3Q...

Release_Notes: http://go/media_app-x20/relnotes/Main/media_app_202101150600_RC00.html

https://chrome-infra-packages.appspot.com/p/chromeos_internal/apps/media_app/app/+/xO6b6gm3QxUDRY3PGCD_ON0uPe2bjwP9ftauSv0ar3cC

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://skia-autoroll.corp.goog/r/media-app-chromium-autoroll
Please CC media-app@grotations.appspotmail.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/master/autoroll/README.md

Cq-Include-Trybots: luci.chrome.try:linux-chromeos-chrome
Bug: b/138543581,b/157694064,b/173979544,b/175515520,b/175517195,b/177375485,b/177381582,b/177382762,b/177388943,b/177620087
Tbr: media-app@grotations.appspotmail.com
Change-Id: Iabc1617da20640879cbc7b957589075b34345376
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2633132Reviewed-by: chromium-internal-autoroll <chromium-internal-autoroll@skia-corp.google.com.iam.gserviceaccount.com>
Commit-Queue: chromium-internal-autoroll <chromium-internal-autoroll@skia-corp.google.com.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#844089}

DEPS

@@ -1599,7 +1599,7 @@ deps = {
     'packages': [
       {
         'package': 'chromeos_internal/apps/media_app/app',
-        'version': 'DYU_0-Aok5UvqgV35z_dEgBIqBP98Ypx98hUZ8a8NcoC',
+        'version': 'xO6b6gm3QxUDRY3PGCD_ON0uPe2bjwP9ftauSv0ar3cC',
       },
     ],
     'condition': 'checkout_chromeos and checkout_src_internal',