Enable the hung plugin detector on Win Aura.

Also enable the jumplist code which was similarly disabled.

BUG=330424,330891
R=cpu@chromium.org

Review URL: https://codereview.chromium.org/108413007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@242648 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 242648