[Android] Convert more test targets to use isolate.

BUG=249870
TBR=ben@chromium.org, acolwell@chromium.org, joi@chromium.org, enne@chromium.org, mark@chromium.org, jam@chromium.org

Review URL: https://chromiumcodereview.appspot.com/19040002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@211547 0039d316-1c4b-4281-b951-d872f2087c98

diff --git a/media/OWNERS b/media/OWNERS
index ee59834..eeb9125 100644
--- a/media/OWNERS
+++ b/media/OWNERS

@@ -6,3 +6,6 @@
 shadi@chromium.org
 vrk@chromium.org
 xhwang@chromium.org
+
+per-file *.isolate=csharp@chromium.org
+per-file *.isolate=maruel@chromium.org