Fix a bug where we try to reference a floating view after its corresponding object has been removed via the "Clear browsing data" command.
Fix a bug where we try to reference a floating view after
its corresponding object has been removed via the "Clear
browsing data" command.

BUG=1270230

git-svn-id: http://src.chromium.org/svn/trunk/src@342 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 7394647a081b11d370ebbcb3c7b3043f019d27d6
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