65.0.3286.0 (Official Build) canary (64-bit) (cohort: Clang-64)
JAWS2018
NVDA 2017.4

Steps to repro:
# In Chrome, visit google.com
# Then visit gmail.com in the same tab
# With JAWS running, press f6
# Tab to the 'back' button
# Notice JAWS doesn't speak a label or tooltip for this control
# Tab to the 'home' button
# Notice JAWS doesn't speak a label or tooltip for this control

Expected: These controls should be read the same as other controls on the toolbar

Actual: JAWS users won't know what these controls are

# Perform the same test in NVDA
# Notice NVDA reads these two buttons and their tooltips
Expected: Works as expected