GitLab

Adds XInput redist DLL which is a new dependency of recently added gamepad code,
and is required on Win XP. laforge has OK'd the size addition to the final
package (~100K).

BUG=79050

Review URL: http://codereview.chromium.org/8774023

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@112812 0039d316-1c4b-4281-b951-d872f2087c98