Add Min as owner for media code in content/browser/android

Remove Nilesh while I'm here.

NOTRY=true

Review URL: https://chromiumcodereview.appspot.com/17176026

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@207877 0039d316-1c4b-4281-b951-d872f2087c98

content/browser/android/OWNERS

 bulach@chromium.org
 jcivelli@chromium.org
 joth@chromium.org
-nileshagrawal@chromium.org
 tedchoc@chromium.org
 yfriedman@chromium.org
 sievers@chromium.org
+
+# per-file rules:
+per-file *media*=qinmin@chromium.org