Whitespace change to test infra

TBR=jbudorick@chromium.org
NOTRY=true
NOPRESUBMIT=true
NOTREECHECKS=true

Review-Url: https://codereview.chromium.org/2805613003
Cr-Commit-Position: refs/heads/master@{#44462}

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.....