GitLab

This forks the ChromeVox Classic codebase out of the main ChromeVox repo.

Strategy:
- code taken from 6f7d8123
the last major release of ChromeVox Classic.
- the compressed injected script matches the current compiled sources published to the webstore
chromeVoxChromePageScript.js. Security fixes were manually cherry-picked.
- chromeVox2ChromeBackgroundScript.js diverges from the webstore published version
- the newly checked in fork will live under ui/accessibility/extensions/chromevoxclassic
- this source is based on the uncompressed build of ChromeVox (therefore retaining all comments)

This fork has yet to be extensively tested.

Change-Id: I52ffd17e8bb7a85cbd7ce3493a2613555b193f97
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1784329
Commit-Queue: David Tseng <dtseng@chromium.org>
Reviewed-by: Dominic Mazzoni <dmazzoni@chromium.org>
Cr-Commit-Position: refs/heads/master@{#693794}