[tools] Whitespace CL

TBR=sergiyb@chromium.org

No-Try: true
Bug: chromium:838266
Change-Id: I0c288eeaf28569d671220ab320aaec677825bb37
Reviewed-on: https://chromium-review.googlesource.com/1154218Reviewed-by: Sergiy Byelozyorov <sergiyb@chromium.org>
Commit-Queue: Sergiy Byelozyorov <sergiyb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#54770}

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....................................