Fix two uninitialized variables in media.

BUG=397762
TEST=compile with no errors
R=dalecurtis@chromium.org

Review URL: https://codereview.chromium.org/413393006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@285741 0039d316-1c4b-4281-b951-d872f2087c98
2 files changed