Roll src/tools/swarming_client/ cc958279f..160b445a4 (27 commits)

https://chromium.googlesource.com/infra/luci/client-py.git/+log/cc958279ffd6..160b445a44e0

$ git log cc958279f..160b445a4 --date=short --no-merges --format='%ad %ae %s'
2020-04-15 tikuta swarming/client: set client and version in User-Agent
2020-04-15 tikuta net: add set_user_agent
2020-04-14 yekuang [swarming] Add user-agent header to the client requests
2020-04-14 tikuta Revert "client: add filename and line in logging"
2020-04-10 yekuang run_isolated.py: Propagate the exceptions from upload_items() to the main thread
2020-04-09 qyearsley Run spellchecker on luci-py.
2020-04-09 tikuta client: add verify_push flag to archive_files_to_storage
2020-04-09 jwata [swarming-client] evict corrupted files in local cache
2020-04-09 yekuang Send SIGTERM to the isolated download process when it times out
2020-04-08 tikuta client: update isolated client
2020-04-08 tikuta client: include relevant logs only in update_isolated.sh
2020-04-01 tikuta client: update isolated client
2020-04-01 tikuta client: update isolated client
2020-04-01 tikuta client: add script to update isolated in run_isolated.py
2020-03-31 tikuta client: check hash of uploaded file
2020-03-30 tikuta client: add filename and line in logging
2020-03-30 yekuang client: update isolated client
2020-03-27 tikuta client: update isolated client
2020-03-27 leilei Update luci_context.py, otherwise it is failed to get LUCI context in Python3.
2020-03-23 leilei Reland "Update Swarming client code to make it work with Python3."
2020-03-23 tikuta Reland "client: remove --extra-variable flag from isolate.py"
2020-03-19 tikuta client: show exception when failed to run command
2020-03-19 mattkot Re-cache free disk space when _load fails
2020-03-18 tikuta Revert "client: remove --extra-variable flag from isolate.py"
2020-03-17 tikuta Revert "Update Swarming client code to make it work with Python3."
2020-03-17 leilei Update Swarming client code to make it work with Python3.
2020-03-12 tikuta swarming: show account id when failed to get oauth_token

Created with:
  roll-dep src/tools/swarming_client

Bug: 1070487
Change-Id: I5892e5bb9256037ef48de29d920969dba9f94372
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2148898Reviewed-by: Takuto Ikuta <tikuta@chromium.org>
Reviewed-by: Yoshisato Yanagisawa <yyanagisawa@google.com>
Commit-Queue: Ye Kuang <yekuang@google.com>
Cr-Commit-Position: refs/heads/master@{#759192}

DEPS

@@ -183,7 +183,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling swarming_client
   # and whatever else without interference from each other.
-  'swarming_revision': 'cc958279ffd6853e0a1b227a7e957ca334fe56af',
+  'swarming_revision': '160b445a44e0daacf6f3f8570ca2707ec451f374',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling ANGLE
   # and whatever else without interference from each other.