Disable worker tests for debug builds.
Disable worker tests for debug builds.

BUG=17572
TEST=none
TBR=levin

Review URL: http://codereview.chromium.org/160029

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@21414 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