The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/third_party/autotest/+/bcabe44e87bd389ef4401b112a88388d11cd9247

commit bcabe44e87bd389ef4401b112a88388d11cd9247
Author: David Haddock <dhaddock@chromium.org>
Date: Tue Apr 10 20:44:12 2018

More tests for bad data in omaha response.

This adds on the previous autoupdate_OmahaResponse CL to add tests for
dealing with bad metadata_size and SHA256 values in the omaha response.

It is automating the test cases in section 1.14 here:
https://testtracker.googleplex.com/testplans/details/450

This CL adds a new client test autoupdate_BadMetadata that will do the
actual checking and handling of the update.

The server test (autoupdate_OmahaResponse) was updated to call this new
test.

This CL also adds a raise_error boolean to
check_update_engine_log_for_entry that I forgot to add to the last CL.

BUG= chromium:828686 
TEST=autoupdate_OmahaResponse.local with all 3 tests.

Change-Id: I0e8f9fe193e07c8a5d364d7101c99f49743428cc
Reviewed-on: https://chromium-review.googlesource.com/994261
Commit-Ready: David Haddock <dhaddock@chromium.org>
Tested-by: David Haddock <dhaddock@chromium.org>
Reviewed-by: Amin Hassani <ahassani@chromium.org>

[add] https://crrev.com/bcabe44e87bd389ef4401b112a88388d11cd9247/server/site_tests/autoupdate_OmahaResponse/control.bad_sha256.full
[add] https://crrev.com/bcabe44e87bd389ef4401b112a88388d11cd9247/server/site_tests/autoupdate_OmahaResponse/control.bad_metadata_size.full
[modify] https://crrev.com/bcabe44e87bd389ef4401b112a88388d11cd9247/server/site_tests/autoupdate_OmahaResponse/control.local
[modify] https://crrev.com/bcabe44e87bd389ef4401b112a88388d11cd9247/server/site_tests/autoupdate_OmahaResponse/autoupdate_OmahaResponse.py
[add] https://crrev.com/bcabe44e87bd389ef4401b112a88388d11cd9247/client/site_tests/autoupdate_BadMetadata/control
[modify] https://crrev.com/bcabe44e87bd389ef4401b112a88388d11cd9247/client/cros/update_engine/update_engine_test.py
[add] https://crrev.com/bcabe44e87bd389ef4401b112a88388d11cd9247/client/site_tests/autoupdate_BadMetadata/autoupdate_BadMetadata.py

The following revision refers to this bug:
  https://chromium.googlesource.com/chromiumos/overlays/chromiumos-overlay/+/631daed54aabeae841a28eb0095e2cba2b6bb0d0

commit 631daed54aabeae841a28eb0095e2cba2b6bb0d0
Author: David Haddock <dhaddock@chromium.org>
Date: Tue Apr 10 23:29:21 2018

Add autoupdate_BadMetadata to ebuild.

BUG= chromium:828686 
CQ-DEPEND=CL:994261
TEST=autoupdate_OmahaResponse.local is passing

Change-Id: I1a5984028ccab8f32af3ffe458a7489cd1f6b59b
Reviewed-on: https://chromium-review.googlesource.com/1000954
Commit-Ready: David Haddock <dhaddock@chromium.org>
Tested-by: David Haddock <dhaddock@chromium.org>
Reviewed-by: Amin Hassani <ahassani@chromium.org>

[modify] https://crrev.com/631daed54aabeae841a28eb0095e2cba2b6bb0d0/chromeos-base/autotest-tests/autotest-tests-9999.ebuild