STR: 1. Start NVDA and Firefox on Windows. 2. Load any page, e. g. https://www.mozilla.org. 3. Press CTRL+Shift+K to open teh console. 4. Shift-tab several times until keyboard focus lands in the main tool bar. Expected: NVDA should say something like "Main toolbar", followed by the button that currently has focus. Actual: NVDA will speak the button, but not the fact that we're now in the main tool bar. To resolve: 1. Give the div with ID toolbox-toolbar-mount a role of "toolbar". 2. Give it a localizable name like "Main", "Toolbox", or reuse the string that the xul:window parent element is already getting.

Comment on attachment 8953729 [details] Bug 1439897 - Give the toolbox toolbar a proper role and label for accessibility, https://reviewboard.mozilla.org/r/222958/#review229392

Pushed by mzehe@mozilla.com: https://hg.mozilla.org/integration/autoland/rev/b82ea31ddb2d Give the toolbox toolbar a proper role and label for accessibility, r=bgrins

Was able to reproduce this bug on Firefox 59.0.3 (64-bit), Build ID = 20180427210249 on Windows 10 64 bit. Bug is no longer reproducible on Firefox Nightly 60.0b16 (64-bit, Build ID = 20180426170554 on Windows 10 64 bit. [testday-20180420]