Initialize SetupFlowStepBase members.
Initialize SetupFlowStepBase members.

BUG=None
TEST=None
CID=14335

Review URL: http://codereview.chromium.org/6482028

git-svn-id: http://src.chromium.org/svn/trunk/src@74806 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 68ed9c10e962071fab0862a58d48462feb5a084e
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser