Partial Safari support for Fetch metadata request headers #19301
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Summary
Added partial support for Fetch Metadata request headers in Safari 16.4+:
Test results and supporting details
Note: I have only tested on a personal iPad running Safari 16.4
The release notes are limited and mentions of the feature are scattered throughout the following locations:
Main references
https://bugs.webkit.org/show_bug.cgi?id=204744
WebKit/WebKit#6211
Other mentions
WebKit/WebKit#4186
WebKit/WebKit#11027
WebKit/WebKit#6296
https://bugs.webkit.org/show_bug.cgi?id=237550
Related issues
None