DevTools: expose linkPreload bit on the network request.

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

Index: third_party/WebKit/Source/core/loader/LinkLoader.cpp
diff --git a/third_party/WebKit/Source/core/loader/LinkLoader.cpp b/third_party/WebKit/Source/core/loader/LinkLoader.cpp
index e1ba30d59c3f79e1d8a6218ebd9a5f0235435377..bdbd13a89dc951a18f7bda284897e00765aa860e 100644
--- a/third_party/WebKit/Source/core/loader/LinkLoader.cpp
+++ b/third_party/WebKit/Source/core/loader/LinkLoader.cpp
@@ -328,6 +328,7 @@ static Resource* preloadIfNeeded(const LinkRelAttribute& relAttribute,
     resourceRequest.setHTTPReferrer(SecurityPolicy::generateReferrer(
         referrerPolicy, href, document.outgoingReferrer()));
   }
+  resourceRequest.setLinkPreload(true);
 
   FetchRequest linkRequest(resourceRequest, FetchInitiatorTypeNames::link,
                            document.encodingName());
@@ -342,7 +343,6 @@ static Resource* preloadIfNeeded(const LinkRelAttribute& relAttribute,
         OtherMessageSource, VerboseMessageLevel,
         String("Preload triggered for " + href.host() + href.path())));
   }
-  linkRequest.setLinkPreload(true);
   return document.loader()->startPreload(resourceType.value(), linkRequest);
 }