Add timestamp to bot ninja output.

The default NINJA_STATUS format is "[%f/%t] ".  This prepends %e to help diagnose slow builds.

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=3323

Change-Id: Ied27317cedc2b07ff57c59eae61fe9e86c7fea33
Reviewed-on: https://skia-review.googlesource.com/3323
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Eric Boren <borenet@google.com>
34 files changed