Fix sync in Chromium-os by not allowing CanShowPromo to initialize the sync system.
Fix sync in Chromium-os by not allowing CanShowPromo to initialize the sync system.

BUG=http://code.google.com/p/chromium-os/issues/detail?id=10031
TEST=cros sync works

Review URL: http://codereview.chromium.org/5685004

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@68872 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