← WebKit — 2026-W38

7609f9143f802ca6bc9215b0b3c924872fcd6481  Re-merge 320786@main with fixes and additional test

not a security fix confidence 0.13 signal score 11.26 Source/WebCore/WebCore.xcodeproj
Classified as not security-relevant.
Triage note: Implements RFC 9842 Use-As-Dictionary: processUseAsDictionaryHeader/storeCompressionDictionaryIfNeeded, compressionDictionary cache records, deleteCacheRecordsForOrigin refactor and clearing dictionaries with cookies; the trustworthiness/URLPattern/opaque checks are part of new feature code, not a fix to an existing bug.
This commit was flagged by the signal scorer and reviewed by AI (not a human). It is listed only so the triage is auditable; there is no root-cause analysis because this is not a vulnerability fix.
Structural signals: smartptr_member_added (+6.47), bounds_guard (+2.0), null_guard (+2.59), uaf_lifetime (+2.2), large_churn (-2.0)

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