Roll src/third_party/chromite a467e264db50..83d2cae04c5f (2 commits)

https://chromium.googlesource.com/chromiumos/chromite.git/+log/a467e264db50..83d2cae04c5f

git log a467e264db50..83d2cae04c5f --date=short --no-merges --format='%ad %ae %s'
2019-09-18 dburger@chromium.org Remove EOL nyan_big, nyan_blaze from legacy CQ.
2019-09-18 lamontjones@chromium.org lib: minor cleanup in image_lib and caller.

Created with:
  gclient setdep -r src/third_party/chromite@83d2cae04c5f

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/chromite-chromium-autoroll
Please CC chrome-os-gardeners@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

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

CQ_INCLUDE_TRYBOTS=luci.chromium.try:chromeos-kevin-rel
TBR=chrome-os-gardeners@google.com

Bug: None
Change-Id: Ia794217e1a176998f6461b2b6310b36fb71e90b9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1810010Reviewed-by: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#697517}

DEPS

@@ -853,7 +853,7 @@ deps = {
 
   # Build tools for Chrome OS. Note: This depends on third_party/pyelftools.
   'src/third_party/chromite': {
-      'url': Var('chromium_git') + '/chromiumos/chromite.git' + '@' + 'a467e264db50039c5bdf1b16099168c0e0d315e1',
+      'url': Var('chromium_git') + '/chromiumos/chromite.git' + '@' + '83d2cae04c5f4598f4e97765fa7db541210f4593',
       'condition': 'checkout_linux',
   },