When hiding a plug-in element, also hide same-sized parent elements (such as <div>s) -- this makes the underlying page clickable where previously it may not have been.
When hiding a plug-in element, also hide same-sized parent elements (such as
<div>s) -- this makes the underlying page clickable where previously it may
not have been.

BUG=63695
TEST=see bug

Review URL: http://codereview.chromium.org/6114004

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@71498 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