[whitespace-cl] Find out if layout test failure is a flake

NOTRY=true
NOTREECHECKS=true

TBR=mslekova@chromium.org

Change-Id: I92373d44389d34e3249757639a9f0c4f1c8ce03f
Reviewed-on: https://chromium-review.googlesource.com/1189362
Commit-Queue: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Sigurd Schneider <sigurds@chromium.org>
Reviewed-by: Maya Lekova <mslekova@chromium.org>
Cr-Commit-Position: refs/heads/master@{#55420}

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....