deploy_chrome: Upload command stats.
deploy_chrome: Upload command stats.

BUG=None
TEST=unit tests.  Manual.

Change-Id: I1c9b946fc3a0c048ed262edff7a2c6b259af62c8
Reviewed-on: https://gerrit.chromium.org/gerrit/48717
Reviewed-by: David James <f231dc574bbeb62604660cbc162d1b8642a0a3af@chromium.org>
Commit-Queue: Ryan Cui <5ce1592d53754a87a44fc2eb7b63d5f77cf50fdb@chromium.org>
Tested-by: Ryan Cui <5ce1592d53754a87a44fc2eb7b63d5f77cf50fdb@chromium.org>

bpsinc-native/src_third_party_chromite,bpsinc-native/src_third_party_chromite,chadversary/chromiumos.chromite,chadversary/chromiumos.chromite,bpsinc-native/src_third_party_chromite