[webkit-changes] [WebKit/WebKit] 6ce612: [Lockdown Mode] Lockdown Mode Safe Font feature fl...

[apple-fcloutier]

  Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: 6ce61264b7ca7855ae3e0a5de0eeebe94e606b97
      https://github.com/WebKit/WebKit/commit/6ce61264b7ca7855ae3e0a5de0eeebe94e606b97
  Author: Félix Cloutier <fcloutier at apple.com>
  Date:   2024-02-29 (Thu, 29 Feb 2024)

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

  Log Message:
  -----------
  [Lockdown Mode] Lockdown Mode Safe Font feature flag gets stuck, cannot be enabled in some cases

https://bugs.webkit.org/show_bug.cgi?id=270307
rdar://123848733

Reviewed by Brent Fulgham.

Due to a logic error, when the Lockdown Mode Safe Font feature flag goes to
`DownloadableBinaryFontTrustedTypes::Restricted` or `...::FallbackParser`, it
gets stuck in that state and can't progress to the other. This makes the
"Lockdown Mode Safe Font" setting toggle ineffective.

This change addresses the issue by allowing state transitions from any
`DownloadableBinaryFontTrustedTypes` state except `...::None`.

* Source/WebKit/WebProcess/WebPage/WebPage.cpp:
(WebKit::adjustSettingsForLockdownMode):

Canonical link: https://commits.webkit.org/275539@main



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