Chrome Version: 67.0.3396.16
OS: 10575.12.0 dev-channel

What steps will reproduce the problem?

Pre-condition for Powerwash/Recovery:
1) This test assumes no REAL TPM FW update has been performed on the device.

2) *** IMPORTANT *** Set the VPD firmware update parameters to enable a DRYRUN:
1) Enter VT2 (Ctrl + Alt + F2)
2) Execute the following: 
vpd -i RW_VPD -s tpm_firmware_update_params=dryrun:1 --> Powerwash scenario
vpd -i RW_VPD -s tpm_firmware_update_params=mode:recovery,dryrun:1 --> Recovery scenario
3) Now perform a read to make sure dryrun:1 is set with the following:
vpd -i RW_VPD -l
4) Flash the recovery image (with the TPM package to test) onto a USB stick.

Steps for Powerwash scenario:
1) Recover device with image prepared in precondition step #2
-- /etc/init/tpm-firmware-update.conf and /usr/sbin/infineon-firmware-updater should be present.

2) Check DRYRUN is still set (Precondition #1).

3) Go through OOBE and login with a user account

4) Logout (Ctrl + Shift + Q, Twice) and trigger powerwash (Shift + Ctrl + Alt + R).
-- Popup window should open with requesting for restart.

5) Click restart. 
-- User should get actual powerwash screen after the reboot.
-- Powerwash screen should contain "Update firmware for added security" checkbox.


6) Check the "Update firmware for added security" checkbox and click 'powerwash'
-- After reboot, the device should perform a powerwash, reboot again, then you should see a 'Installing update/firmware' screen with a progress bar.

7) Wait for the TPM firmware update progress bar to reach 50% and then perform an EC Reboot (F3 + PWR) to interrupt the firmware update

Steps for Recovery scenario:
1) Enter into recovery mode(Esc + F3 + Power) .
2) Plug recovery stick (precondition step #2) into device.
-- Recovery media verification should start.
-- TPM Firmware update screen should be displayed after verification. INTERRUPT it per next step.

3) Wait for the TPM firmware update progress bar to reach 50% and then perform an EC Reboot (F3 + PWR) to interrupt the firmware update


What is the expected result?
User should get ChromeOS missing/damaged screen. 

What happens instead?
Device reboots and OOBE screen is displayed.  


Please use labels and text to provide additional information.
Note:  Uninterrupted tpm firmware update works fine for Recovery and Powerwash scenarios.  


If this is a regression (i.e., worked before), please consider using the
bisect tool (https://www.chromium.org/developers/bisect-builds-py) to help
us identify the root cause and more rapidly triage the issue.

For graphics-related bugs, please copy/paste the contents of the about:gpu
page at the end of this report.