Fix link header preload on subresources

third_party/WebKit/Source/core/loader/FrameFetchContext.cpp

Index: third_party/WebKit/Source/core/loader/FrameFetchContext.cpp
diff --git a/third_party/WebKit/Source/core/loader/FrameFetchContext.cpp b/third_party/WebKit/Source/core/loader/FrameFetchContext.cpp
index 27d73c65b884d366ba098736c80de34c6a78dd87..962d87b3d4c71c5dffb44cd3701de046d0c5f147 100644
--- a/third_party/WebKit/Source/core/loader/FrameFetchContext.cpp
+++ b/third_party/WebKit/Source/core/loader/FrameFetchContext.cpp
@@ -250,14 +250,17 @@ void FrameFetchContext::dispatchWillSendRequest(unsigned long identifier, Resour
 
 void FrameFetchContext::dispatchDidReceiveResponse(unsigned long identifier, const ResourceResponse& response, ResourceLoader* resourceLoader)
 {
+    LinkLoader::CanLoadResources resourceLoadingPolicy = LinkLoader::LoadResourcesAndPreconnect;
     MixedContentChecker::checkMixedPrivatePublic(frame(), response.remoteIPAddress());
-    LinkLoader::loadLinkFromHeader(response.httpHeaderField(HTTPNames::Link), frame()->document(), NetworkHintsInterfaceImpl(), LinkLoader::DoNotLoadResources);
     if (m_documentLoader == frame()->loader().provisionalDocumentLoader()) {
         ResourceFetcher* fetcher = nullptr;
         if (frame()->document())
             fetcher = frame()->document()->fetcher();
         m_documentLoader->clientHintsPreferences().updateFromAcceptClientHintsHeader(response.httpHeaderField(HTTPNames::Accept_CH), fetcher);
+        // When response is received with a provisional docloader, the resource haven't committed yet, and we cannot load resources, only preconnect.
+        resourceLoadingPolicy = LinkLoader::DoNotLoadResources;
     }
+    LinkLoader::loadLinkFromHeader(response.httpHeaderField(HTTPNames::Link), frame()->document(), NetworkHintsInterfaceImpl(), resourceLoadingPolicy);
 
     if (response.hasMajorCertificateErrors() && resourceLoader)
         MixedContentChecker::handleCertificateError(frame(), resourceLoader->originalRequest(), response);