Coverity: Initialize tab_contents_ and wait_state_ in the constructor.
Coverity: Initialize tab_contents_ and wait_state_ in the constructor.

CID=1510
BUG=none
TEST=none
Review URL: http://codereview.chromium.org/218036

git-svn-id: http://src.chromium.org/svn/trunk/src@27120 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: d21a59f415c718697058eddf9f2ef9d464915e4a
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