Only unset the kWebPluginDelegateProperty property after calling the plugin's windowproc, otherwise if it ends up dispatching another message to itself we'll hit the NOTREACHED at the beginning of the function.
Only unset the kWebPluginDelegateProperty property after calling the plugin's windowproc, otherwise if it ends up dispatching another message to itself we'll hit the NOTREACHED at the beginning of the function.

Review URL: http://codereview.chromium.org/99267

git-svn-id: http://src.chromium.org/svn/trunk/src@15077 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 84cd3b52493feb898a9192d0997a728f22ceaf01
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