Skip some performances microbenchmarks that aren't meant to be regression tests.

BUG=273662
NOTRY=True

Review URL: https://chromiumcodereview.appspot.com/23264016

git-svn-id: svn://svn.chromium.org/blink/trunk@156408 bbb929c8-8fbe-4397-9dbb-9b2b20218538