Chrome Version: R-65 10323.55.0 Beta

What steps will reproduce the problem?
(1) Recover device with 10323.55.0
(2) Trigger a render crash or browser crash with chrome://crash and chrome://inducebrowsercrashforrealz/
(3) Navigate to chrome://crashes and click 'Start uploading crashes'
(4) Crash reports are not sent

What is the expected result?
Crash reports should be sent succesfully

What happens instead?
Browser and Render crashes are not sent

Notes*

Running cat /var/log/messages | grep crash_ shows that the reports are marked as corrupted and removed:
2018-03-13T17:28:44.477313+00:00 WARNING crash_reporter[5919]: [user] Received crash notification for chrome[1973] sig 4, user 1000 (ignoring call by kernel - chrome crash; waiting for chrome to call us directly)
...
2018-03-13T17:29:31.772018+00:00 NOTICE crash_sender[6638]: Considering metadata /home/chronos/u-6adcbee78812304c067e9cc3a4cb871ddda2cac3/crash/chrome.20180313.102840.5783.meta.
2018-03-13T17:29:31.777461+00:00 NOTICE crash_sender[6645]: Removing corrupted metadata.
2018-03-13T17:29:31.780702+00:00 NOTICE crash_sender[6647]: Considering metadata /home/chronos/u-6adcbee78812304c067e9cc3a4cb871ddda2cac3/crash/chrome.20180313.102844.1973.meta.
2018-03-13T17:29:31.786570+00:00 NOTICE crash_sender[6654]: Removing corrupted metadata.
2018-03-13T17:30:58.852530+00:00 INFO crash_reporter[6792]: libminijail[6792]: mount /dev/log -> /dev/log type ''

Kernel crash logs and powerd logs are sent without issue.  Only render and browser crashes fail to send.

2018-03-13T17:29:30.336565+00:00 NOTICE crash_sender[6545]: Considering metadata /var/spool/crash/powerd.20180313.102831.1643.meta.
2018-03-13T17:29:30.361497+00:00 NOTICE crash_sender[6561]: Current send rate: 1sends/24hrs
2018-03-13T17:29:30.366012+00:00 NOTICE crash_sender[6567]: Scheduled to send in 0s.
2018-03-13T17:29:30.387839+00:00 NOTICE crash_sender[6615]: Sending crash:
2018-03-13T17:29:30.388346+00:00 NOTICE crash_sender[6616]:   Metadata: /var/spool/crash/powerd.20180313.102831.1643.meta (minidump)
2018-03-13T17:29:30.388835+00:00 NOTICE crash_sender[6617]:   Payload: /var/spool/crash/powerd.20180313.102831.1643.dmp
2018-03-13T17:29:30.389404+00:00 NOTICE crash_sender[6618]:   Version: 10323.55.0
2018-03-13T17:29:30.389875+00:00 NOTICE crash_sender[6619]:   Boot mode: dev
2018-03-13T17:29:30.390340+00:00 NOTICE crash_sender[6620]:   Exec name: powerd
2018-03-13T17:29:31.764689+00:00 NOTICE crash_sender[6632]: Crash report receipt ID 848745bc6b548ae9
2018-03-13T17:29:31.766663+00:00 NOTICE crash_sender[6634]: Successfully sent crash /var/spool/crash/powerd.20180313.102831.1643.meta and removing.


Diff between 10323.52.0 and 10323.55.0 show the below CL modified crash report corruption detection: https://crosland.corp.google.com/log/10323.52.0..10323.55.0
-- https://chromium-review.googlesource.com/949543