Coverity: Initialize all member variables in the default constructor.
Coverity: Initialize all member variables in the default constructor.

CID=1423
BUG=none
TEST=none
Review URL: http://codereview.chromium.org/249024

git-svn-id: http://src.chromium.org/svn/trunk/src@27418 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 183cc1f420a9c8e091de44ee140b152000b67298
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