[webkit-changes] [WebKit/WebKit] 6be388: AX: WebProcess::accessibilityRelayProcessSuspended...

[Tyler Wilcock]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 6be388b56fc65fe2f3eb74bd266b3d89b0b8ef13
      https://github.com/WebKit/WebKit/commit/6be388b56fc65fe2f3eb74bd266b3d89b0b8ef13
  Author: Tyler Wilcock <tyler_w at apple.com>
  Date:   2024-01-24 (Wed, 24 Jan 2024)

  Changed paths:
    M Source/WebKit/WebProcess/WebProcess.cpp
    M Source/WebKit/WebProcess/WebProcess.h

  Log Message:
  -----------
  AX: WebProcess::accessibilityRelayProcessSuspended can drop requests to unsuspend, causing ATs to think web content is permanently suspended
https://bugs.webkit.org/show_bug.cgi?id=268024
rdar://problem/121545631

Reviewed by Andres Gonzalez.

Depending on timing, we can get a call to unsuspend the process at a moment when we don't have
any webpages (but may gain them soon). Even when we do get a webpage back, we don't try to send
the process unsuspension message, causing assistive technologies to think we are permanently suspended.

Fix this by storing this pending unsuspension as a new WebProcess member variable, and processing it
when a webpage is added.

* Source/WebKit/WebProcess/WebProcess.cpp:
(WebKit::WebProcess::createWebPage):
(WebKit::WebProcess::accessibilityRelayProcessSuspended):
* Source/WebKit/WebProcess/WebProcess.h:

Canonical link: https://commits.webkit.org/273474@main