Fix uninitialized ExtensionView::pending_preferred_width_.
Fix uninitialized ExtensionView::pending_preferred_width_.

BUG=13103
Review URL: http://codereview.chromium.org/119389

git-svn-id: http://src.chromium.org/svn/trunk/src@18095 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 1d1ba5b0c91b5e4f3f28a1aa0b841e18b3f9f0c8
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