[autotest] Reduce the offload timeout in gs_offloader

The default timeout for offloading a single results directory was 3
hours.  Aside from being excessive, the value was causing problems
because of the separate, shorter timeout for ProcessSilentTimeout
exceptions from BackgroundTaskRunner.

This reduces the timeout to a hopefully more reasonable 1 hour
limit.

BUG=chromium:364327
TEST=run unit tests
DEPLOY=gs_offloader

Change-Id: If1d4e27f28c7c74abbcb41d87f03731e9845797c
Reviewed-on: https://chromium-review.googlesource.com/216347
Tested-by: Richard Barnette <jrbarnette@chromium.org>
Reviewed-by: Dan Shi <dshi@chromium.org>
Commit-Queue: Richard Barnette <jrbarnette@chromium.org>
1 file changed