Branch: refs/heads/main
  Home:   https://github.com/WebKit/WebKit
  Commit: f009b61f8d117e884ec2750b47bf387d85695d77
      
https://github.com/WebKit/WebKit/commit/f009b61f8d117e884ec2750b47bf387d85695d77
  Author: Yoav Weiss <[email protected]>
  Date:   2025-11-25 (Tue, 25 Nov 2025)

  Changed paths:
    M 
LayoutTests/imported/w3c/web-platform-tests/resource-timing/idlharness.any-expected.txt
    M 
LayoutTests/imported/w3c/web-platform-tests/resource-timing/idlharness.any.worker-expected.txt
    M 
LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/navigation-timing-delivery-type.https_prefetch=false&bypass_cache=false-expected.txt
    M 
LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/navigation-timing-delivery-type.https_prefetch=false&bypass_cache=true-expected.txt
    M 
LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/navigation-timing-delivery-type.https_prefetch=true&bypass_cache=false-expected.txt
    M 
LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/navigation-timing-delivery-type.https_prefetch=true&bypass_cache=true-expected.txt
    M 
LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/prefetch-uses-cache.sub.https_cross-site-expected.txt
    M 
LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/prefetch-uses-cache.sub.https_same-site-expected.txt
    M Source/WebCore/loader/DocumentLoader.cpp
    M Source/WebCore/loader/DocumentPrefetcher.cpp
    M Source/WebCore/loader/DocumentPrefetcher.h
    M Source/WebCore/loader/ResourceTiming.h
    M Source/WebCore/page/PerformanceResourceTiming.h
    M Source/WebCore/page/PerformanceResourceTiming.idl
    M Source/WebCore/platform/network/NetworkLoadMetrics.cpp
    M Source/WebCore/platform/network/NetworkLoadMetrics.h
    M Source/WebKit/Shared/WebCoreArgumentCoders.serialization.in

  Log Message:
  -----------
  Speculation Rules: implement Navigation Timing's deliveryType
https://bugs.webkit.org/show_bug.cgi?id=300586

Reviewed by Alex Christensen.

This PR exposes the `deliveryType` attribute on Resource Timing, with an empty 
string value in most cases.
It then sets that value to "navigational-prefetch" for prefetched documents, 
exposed in their navigation timing entries.

No new tests, but existing test expectations progress.

* 
LayoutTests/imported/w3c/web-platform-tests/resource-timing/idlharness.any-expected.txt:
* 
LayoutTests/imported/w3c/web-platform-tests/resource-timing/idlharness.any.worker-expected.txt:
* 
LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/navigation-timing-delivery-type.https_prefetch=false&bypass_cache=false-expected.txt:
 Progression.
* 
LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/navigation-timing-delivery-type.https_prefetch=false&bypass_cache=true-expected.txt:
 Progression.
* 
LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/navigation-timing-delivery-type.https_prefetch=true&bypass_cache=false-expected.txt:
 Progression.
* 
LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/navigation-timing-delivery-type.https_prefetch=true&bypass_cache=true-expected.txt:
 Progression.
* 
LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/prefetch-uses-cache.sub.https_cross-site-expected.txt:
* 
LayoutTests/imported/w3c/web-platform-tests/speculation-rules/prefetch/prefetch-uses-cache.sub.https_same-site-expected.txt:
* Source/WebCore/loader/DocumentLoader.cpp:
(WebCore::DocumentLoader::notifyFinished): Set the `fromPrefetch` parameter on 
metrics that come from a prefetched resource.
(WebCore::DocumentLoader::commitData): Set the `fromPrefetch` parameter on 
metrics where there's an in-flight prefetch with the same URL.
* Source/WebCore/loader/DocumentPrefetcher.cpp:
(WebCore::DocumentPrefetcher::wasPrefetched const): Returns true if there's an 
in-flight prefetch with that URL.
(WebCore::DocumentPrefetcher::takePrefetchedNetworkLoadMetrics):
* Source/WebCore/loader/DocumentPrefetcher.h:
* Source/WebCore/loader/ResourceTiming.h:
(WebCore::ResourceTiming::deliveryType const): Getter.
* Source/WebCore/page/PerformanceResourceTiming.h:
(WebCore::PerformanceResourceTiming::deliveryType const):
(WebCore::PerformanceResourceTiming::resourceTiming):
* Source/WebCore/page/PerformanceResourceTiming.idl: Add the deliveryType 
attribute.
* Source/WebCore/platform/network/NetworkLoadMetrics.cpp:
(WebCore::NetworkLoadMetrics::NetworkLoadMetrics): Initialize fromPrefetch.
(WebCore::NetworkLoadMetrics::isolatedCopy const): Copy fromPrefetch.
* Source/WebCore/platform/network/NetworkLoadMetrics.h:
* Source/WebKit/Shared/WebCoreArgumentCoders.serialization.in:

Canonical link: https://commits.webkit.org/303527@main



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