Enabled native client by default.
Enabled native client by default.

BUG=chromium-os:5110
TEST=none

Review URL: http://codereview.chromium.org/3029028

chadversary/chromiumos.platform.login_manager,joshfire/chromiumos-platform-login_manager,chadversary/chromiumos.platform.login_manager,joshfire/chromiumos-platform-login_manager,joshfire/chromiumos-platform-login_manager,chadversary/chromiumos.platform.login_manager