commit f09b08c9e5db436e8725d582ca1085981404936d
author Greg Thompson <grt@chromium.org> Tue Apr 22 18:07:55 2025
committer Chromium LUCI CQ <chromium-scoped@luci-project-accounts.iam.gserviceaccount.com> Tue Apr 22 18:07:55 2025
tree 3d40651a2dfbd46e772ca19efe3ebc23197e09e4
parent 97c9c54037508644626e641ea534766f9e8533df

[A11yPerformance] Isolate tests from platform accessibility integration

This change introduces ui::AXMode::kFromPlatform: a meta-flag that must
always be used in combination with one or more other flags and is never
sent to renderers. It indicates that the other flags in its bundle are
being applied in response to an interaction with the platform's
accessibility integration.

This new mode flag is included at all callsites that enable
accessibility as a result of inbound calls (e.g., detection of
VoiceOver).

BrowserAccessibilityState::SetActivationFromPlatformEnabled() is now
used in tests to suppress accessibility modes that are set due to
interactions from accessibility tools. This allows tests to run reliably
even in the face of unexpected inbound calls.

The browser can be launched with
--disable-platform-accessibility-integration on the command line to
perform this same suppression. A new checkbox in chrome://accessibility
does the same.

Bug: b/371230119
AX-Relnotes: n/a.
Change-Id: Ibe90b0c459b2b0a6b5340237a12109747350b289
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6447273
Reviewed-by: Aaron Leventhal <aleventhal@chromium.org>
Reviewed-by: Zijie He <zijiehe@google.com>
Reviewed-by: Benjamin Beaudry <benjamin.beaudry@microsoft.com>
Auto-Submit: Greg Thompson <grt@chromium.org>
Reviewed-by: Charlie Reis <creis@chromium.org>
Commit-Queue: Aaron Leventhal <aleventhal@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1450072}