Add the test plugin to the Mac plugin whitelist
Add the test plugin to the Mac plugin whitelist

TBR=amanda
BUG=none
TEST=Happier Mac WebKit test bots.

Review URL: http://codereview.chromium.org/165267

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@22963 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