Chrome: 69.0.3493.3 (Official Build) dev (64-bit) (cohort: Dev)
JAWS: 2018
NVDA: 2018.2.1

Steps to repro:
# With JAWS or NVDA running, launch Chrome
# Visit chrome://history
# Tab to the history list
# Use arrows to navigate
# Notice that you can navigate beyond the bounds of the history list 
# Notice that each entry appears to have a separate actions button, but in reality only one is on screen
# Activate forms/focus mode and tab to the history list
# Notice that arrow keys properly navigate and stay in the bounds of the list and that tabbing will bring you to the correct actions button for the focused entry

Expected: Forms or focus mode should automatically activate.

Actual: The user can only navigate history if they know that they must manually activate forms/focus mode.