When an omnibox suggestion is selected, we'd like the accessibility label to announce the fact that tab switching is an option. Hopefully by announcing that a tab switch keyboard action is available, although what the keyboard shortcut will be is still being discussed. This text (e.g. "Shift+enter to switch to open tab") should be added after the existing description of title and URL.

To do this, special logic should be added to AutocompleteMatchType::ToAccessibilityLabel similar to how answers are detected here and either use an entirely new message template or append the result of a new template.

https://cs.chromium.org/chromium/src/components/omnibox/browser/autocomplete_match_type.cc?l=123&rcl=f27798f4413b6f5e01b3c07aba49b9717e3b0cee

aleventhal: Can you advise on how best to do this? Or put together a CL since you may be able to best judge the most effective approach? The thing that's not clear to me is that there's already different message templates based on whether it's a regular URL suggestion or one from a bookmark or the clipboard. Those special ones add text to the end that say "location from history", "bookmark" or "location from clipboard". Do we need two templates for each of those, with and without the new announcement? I'm hoping not, that we can have a new template just for the announcement and append the two results.