Whitelist change to test infra

TBR=sergiyb@chromium.org

Bug: chromium:747960
No-Try: true
No-Presubmit: true
No-Tree-Checks: true
Change-Id: I4acaa2b825585ba41b70de58bed727b558c3b1ac
Reviewed-on: https://chromium-review.googlesource.com/687215
Commit-Queue: Michael Achenbach <machenbach@chromium.org>
Reviewed-by: Michael Achenbach <machenbach@chromium.org>
Cr-Commit-Position: refs/heads/master@{#48182}

tools/whitespace.txt

@@ -7,4 +7,4 @@ A Smi balks into a war and says:
 The doubles heard this and started to unbox.
 The Smi looked at them when a crazy v8-autoroll account showed up......
 The autoroller bought a round of Himbeerbrause. Suddenly.....
-The bartender starts to shake the bottles............
+The bartender starts to shake the bottles.............