CrOS Media App: Propagate OWNERS for integration tests.

Bug: b/157694064
Change-Id: I7d65299aa3db2a339bd6bc66b72dfa592c43cfb7
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2596936
Commit-Queue: Trent Apted <tapted@chromium.org>
Reviewed-by: Trent Apted <tapted@chromium.org>
Reviewed-by: David Lei <dlei@google.com>
Auto-Submit: David Lei <dlei@google.com>
Cr-Commit-Position: refs/heads/master@{#837944}

chrome/browser/chromeos/web_applications/OWNERS

@@ -7,7 +7,7 @@ per-file chrome_camera_app*=file://chromeos/components/camera_app_ui/OWNERS
 per-file chrome_help_app*=carpenterr@chromium.org
 per-file chrome_file_manager*=file://chromeos/components/file_manager/OWNERS
 per-file file_manager*=file://chromeos/components/file_manager/OWNERS
-per-file chrome_media_app*=file://chromeos/components/media_app_ui/OWNERS
+per-file *media_app*=file://chromeos/components/media_app_ui/OWNERS
 per-file terminal_source*=calamity@chromium.org
 per-file terminal_source*=joelhockey@chromium.org
 per-file default_web_app_ids.h=jshikaram@chromium.org