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Currently, ARCVM is not booting in the case of
AdbSideloadResponseCode::NEED_POWERWASH. AdbSideloadResponseCode can
return 3 possible values:
1. SUCCESS - Here, the sideloading flag should be setup
accordingly.
2. FAILED - Because of an unsuccessful response, here we stop
the upgradation of ARC and log an error.
3. NEED_POWERWASH - Currently, this is implemented
incorrectly - replicating the above FAILED case.
NEED_POWERWASH occurs when bootlockbox has an undefined
NVSpace - http://shortn/_3dSlMMlZBc.

The scope of this CL is to upgrade the ARC in NEED_POWERWASH
scenario while ensuring that is_enabled_sideloading flag is
set to 0, without going into the implementation details of
Powerwash.

BUG=b:175420640

TEST=Tested with following:
1. Put the device to be in Need_Powerwash case.
2. android-sh on the device post-login.

Unit Test:
testing/xvfb.py ./out/Debug/components_unittests
--gtest_filter="ArcVmClientAdapterTest.*"

Change-Id: Ic2864fbb065672db595b774e744f1a2423385f87
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2587566
Commit-Queue: Yusuke Sato <yusukes@chromium.org>
Reviewed-by: Ryo Hashimoto <hashimoto@chromium.org>
Reviewed-by: Yusuke Sato <yusukes@chromium.org>
Cr-Commit-Position: refs/heads/master@{#837936}