We were printing the notice when the decorator was called, so that if
several functions are decorated, the countdown will increase more than once
during each execution.

This change fixes that.

Bug: 832386
Change-Id: I5d6dd2d793137e1e2c83b6cc765b6245080b9d91
Reviewed-on: https://chromium-review.googlesource.com/1141073Reviewed-by: Aaron Gable <agable@chromium.org>
Commit-Queue: Edward Lesmes <ehmaldonado@chromium.org>