Initialize StatsTable::Private members.
Initialize StatsTable::Private members.

BUG=None
TEST=None
CID=13412

Review URL: http://codereview.chromium.org/6483011

git-svn-id: http://src.chromium.org/svn/trunk/src@74594 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 93ad569fef902563b0be357bd802d7bc6e07c7c2
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