Removes the `NOTREACHED` in `-[CWVWebViewConfiguration preferences]` that is hit in some new `CWVWebView` code, the `NOTREACHED` was originally to avoid developer error in accessing it from Swift, but we can instead just mark it as unavailable with `NS_UNAVAILABLE` to avoid that possibility instead and allow the Obj-C side to just coalesce on null.
Chromium change:
commit 29b0e7808c42609ad6a816161d65acc6d2b46841
Author: Anuj Kumar <anujbh@google.com>
Date: Fri Apr 17 15:27:16 2026 -0700
[ios/web_view] Add triggerNonFatalCheck to CWVPreferences
Adds a new non-persistent, in-memory property 'triggerNonFatalCheck'
to CWVPreferences. When enabled, it triggers a non-fatal CHECK during
CWVWebView initialization to facilitate integration testing of
non-fatal checks by CWV clients.
Note: All code added in this CL is temporary for release integration
testing and will be reverted after testing in the stable channel
concludes.
The CHECK is implemented as:
CHECK(false, base::NotFatalUntil::M235); with a distant launch
milestone to ensure cleanup occurs before it becomes fatal.
Bug: 503005516
Change-Id: Ifea699ed37f2760bcc80cc49a71968075c2ad148
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7751665
Reviewed-by: Justin Cohen <justincohen@google.com>
Commit-Queue: Anuj Kumar <anujbh@google.com>
Reviewed-by: John Wu <jzw@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1616907}
Kyle Hickinson
453caf3ce6