Add candidate_window to chromeos_builder target.
Add candidate_window to chromeos_builder target.

This is to get back candidate_window binary in the snapshots
of chromium for chromium os that can be found at

http://build.chromium.org/buildbot/snapshots/chromium-rel-linux-chromiumos/

TEST=manually
BUG=crosbug.com/1708

Review URL: http://codereview.chromium.org/660265

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@40259 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser