Roll src/third_party/chromite/ 5f638a109..4c1562dfd (3 commits)

https://chromium.googlesource.com/chromiumos/chromite.git/+log/5f638a1091fb..4c1562dfdeef

$ git log 5f638a109..4c1562dfd --date=short --no-merges --format='%ad %ae %s'
2018-05-14 shapiroc cbuildbot: Fix file check outside chroot
2018-05-04 bmgordon cros_test_lib: Refactor cros_build_lib mocks
2018-05-12 yunlian cros_setup_toolchain: build toolchains in reversed order.

Created with:
  roll-dep src/third_party/chromite
BUG=chromium:842834,chromium:809634,chromium:711369


The AutoRoll server is located here: https://chromite-chromium-roll.skia.org

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.


TBR=chrome-os-gardeners@chromium.org

Change-Id: Icd8ebd153995e7b541c78dc08f8072239c16a140
Reviewed-on: https://chromium-review.googlesource.com/1062649Reviewed-by: Chromite Chromium Autoroll <chromite-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Commit-Queue: Chromite Chromium Autoroll <chromite-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#559319}

DEPS

@@ -498,7 +498,7 @@ deps = {
 
   # Build tools for Chrome OS. Note: This depends on third_party/pyelftools.
   'src/third_party/chromite': {
-      'url': Var('chromium_git') + '/chromiumos/chromite.git' + '@' + '5f638a1091fb0af2c5edacac2f51a9aa009a88c0',
+      'url': Var('chromium_git') + '/chromiumos/chromite.git' + '@' + '4c1562dfdeef52d791af660b49b620daea277738',
       'condition': 'checkout_linux',
   },