Revert 241968 "Update maps benchmark and wpr."

The maps benchmark is timing out on a perf bot.  Seems like more work is needed
before the benchmark can be re-enabled.

BUG=330816

> Update maps benchmark and wpr.
> 
> BUG=329290
> R=bajones@chromium.org
> TBR=dtu@chromium.org
> 
> Review URL: https://codereview.chromium.org/109793013

TBR=bajones@chromium.org

Review URL: https://codereview.chromium.org/108803009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@242607 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 242607