[Webkit-unassigned] [Bug 138169] WKWebView does not fully support custom NSURLProtocol

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=138169

--- Comment #16 from Eugene But <eugenebut at chromium.org> ---
Early this year Chrome for iOS migrated from UIWebView to WKWebView. WKWebView gave us a huge improvement in stability, but inability to use custom network protocols made impossible to support the following features:

Privacy
 - Block 3rd party cookies
 - Do Not Track
 - Non-ephemeral Incognito browsing (so users are not logged out if they background the app and the app is killed in the background.)

Security
 - HSTS preloads
 - Public key pinning
 - Safe browsing
 - SHA-1 deprecation warning

Other features
 - Data Saver
 - Downloads if authentication is required (no access to cookies)
 - Multiple profiles support
 - QUIC network protocol
 - WebP image format

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