What steps will reproduce the problem?
(1) Be on a phone with low storage.
(2) Upgrade Chrome to a version that has a migration step that fails.

What is the expected result?
TBD.  We should either:
(1) Notify the user that something went wrong and that some features might not work properly.
(2) Have special UI surfaces for all affected screens (downloads, history, etc.?).
(3) Attempt to clean up disk space and migrate again.

What happens instead?
We silently fail and many features don't work or work unexpectedly.  This can be the source for a lot of negative feedback/confusion, especially when other features fail due to this component not being available.