Fix 3011: Accessibility crash on teardown of HWNDViewContainer http://code.google.com/p/chromium/issues/detail?id=3011
Fix 3011: Accessibility crash on teardown of HWNDViewContainer
http://code.google.com/p/chromium/issues/detail?id=3011

Looks like we are trying to access the HWND of a window during teardown of the window.

Review URL: http://codereview.chromium.org/6015

git-svn-id: http://src.chromium.org/svn/trunk/src@2723 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 7b50acdbbe2b031b2a25df7dd4201ee8982b0ea5
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