Revert "Disable PluginTest.Refresh because it's crashing on the bots for"
Revert "Disable PluginTest.Refresh because it's crashing on the bots for"

This reverts commit r34517.

The next test failed, so reverting the disable.

TBR=dglazkov

Review URL: http://codereview.chromium.org/501012

git-svn-id: http://src.chromium.org/svn/trunk/src@34518 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: dbda245261909b4bac2d484d838e91b6a9dc66c1
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