[NaCl SDK AppEngine] Update demo binaries to buildbot-built versions.

BUG=none
R=sbc@chromium.org

Review URL: https://codereview.chromium.org/62523003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@233407 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 233407