Roll src/third_party/chromite/ 19800a2aa..7381c2dc3 (30 commits).

https://chromium.googlesource.com/chromiumos/chromite.git/+log/19800a2aaeab..7381c2dc3216

$ git log 19800a2aa..7381c2dc3 --date=short --no-merges --format='%ad %ae %s'
2016-08-22 xixuan chromite: clear pylint warning.
2016-08-26 rahulchaudhry chromeos_config: remove old (grouped) toolchain builders.
2016-08-12 stevenjb deploy_chrome: Always test conditions and eliminate --strict
2016-09-01 vapier merge_package_status: convert to commandline
2016-08-22 dgarrett Revert "chromeos_config: Disable veyron_rialto payload testing."
2016-09-01 vapier systeminfo_unittest: clean up asserts a bit
2016-08-30 penghuang Recognize mojo library correctly.
2016-08-31 cmtice [waterfall] Test changing the boards in the toolchain waterfall.
2016-08-31 vapier gs: handle bad perms w/crcmod compile
2016-08-29 aaboagye cbuildbot: stages: Add runattr for test artifacts.
2016-08-29 laszio Revert "AFDO: Increase the expiration days of old AFDO data."
2016-09-02 akeshet valiation_pool: make throttled exponential falloff less aggressive
2016-09-01 akeshet validation_pool: increase short term CQ candidate limit to 150
2016-09-01 vapier cros_mark_chrome_as_stable: convert to commandline
2016-08-24 bhthompson Disable paygen for smaug
2016-09-01 vapier cros_generate_local_binhosts: convert to commandline
2016-09-01 nxia Put sleep between apply_change operations.
2016-09-01 akeshet validation_pool: short-term hack to limit CQ volume to 50
2016-08-31 nxia Log gs errors in gs _RetryFilter
2016-08-29 dgarrett simple_builders: Disable unittests.
2016-08-31 chrome-bot Update config settings by config-updater.
2016-08-24 phobbs metrics.py: Add reset-after-flush metrics
2016-08-30 chrome-bot Update config settings by config-updater.
2016-08-30 chrome-bot Update config settings by config-updater.
2016-08-29 derat chromite: Add --private-key to "cros flash".
2016-08-18 vapier gs: auto-compile local crcmod
2016-08-25 yunlian Disable hugepages for lumpy-chrome-pfq bot.
2016-08-26 chrome-bot Update config settings by config-updater.
2016-08-26 akeshet cidb: add start_time index to buildTable
2016-08-25 bhthompson Add reef-paladin builder to the waterfall

BUG=

Review-Url: https://codereview.chromium.org/2310523002
Cr-Commit-Position: refs/heads/master@{#416337}

DEPS

@@ -391,7 +391,7 @@ deps_os = {
 
     # Build tools for Chrome OS. Note: This depends on third_party/pyelftools.
     'src/third_party/chromite':
-     Var('chromium_git') + '/chromiumos/chromite.git' + '@' + '19800a2aaeabde1d99cfd9fa667a512e1739667d',
+     Var('chromium_git') + '/chromiumos/chromite.git' + '@' + '7381c2dc32165daee391e927c976bcf819831ec3',
 
     # Dependency of chromite.git and skia.
     'src/third_party/pyelftools':