[Webkit-unassigned] [Bug 97408] New: Measure the usage of the "X-WebKit-CSP" header in the hopes of dropping the prefix completely.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=97408

           Summary: Measure the usage of the "X-WebKit-CSP" header in the
                    hopes of dropping the prefix completely.
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: ASSIGNED
          Severity: Normal
          Priority: P2
         Component: WebCore Misc.
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: mkwst at chromium.org
                CC: abarth at webkit.org
            Blocks: 97190


At some point, we'll want to drop the "X-WebKit-CSP" header completely. We won't be able to do that unless we have some baseline measurements. Assuming that it's very low cost, I think it makes sense to start measuring now.

When we add the unprefixed header, we should likely measure that as well to track the transition. I'd suggest doing both measurements inside of ContentSecurityPolicy::didReceiveHeader.

WDYT, Adam?

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