Fix autofill dialog not reshowing problem.
Fix autofill dialog not reshowing problem.

This is because NativeDialogHost sends GTK_RESPONSE_DELETE_EVENT and autofill dialog does not handle it.

BUG=chromium-os:3816
TEST=Verify fix for chromium-os:3816.

Review URL: http://codereview.chromium.org/2655004

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@48963 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser