Add CORS support for <link> elements.

Source/core/loader/LinkLoader.cpp

Index: Source/core/loader/LinkLoader.cpp
diff --git a/Source/core/loader/LinkLoader.cpp b/Source/core/loader/LinkLoader.cpp
index 25c23488f04ba758900e36b47a0f75d52ef52502..afdadb7fc2ec7a2212184e5733cc8b85ace461e5 100644
--- a/Source/core/loader/LinkLoader.cpp
+++ b/Source/core/loader/LinkLoader.cpp
@@ -98,7 +98,7 @@ void LinkLoader::didSendDOMContentLoadedForPrerender()
     m_client->didSendDOMContentLoadedForLinkPrerender();
 }
 
-bool LinkLoader::loadLink(const LinkRelAttribute& relAttribute, const String& type, const KURL& href, Document& document)
+bool LinkLoader::loadLink(const LinkRelAttribute& relAttribute, const String& crossOriginMode, const String& type, const KURL& href, Document& document)
 {
     if (relAttribute.isDNSPrefetch()) {
         Settings* settings = document.settings();
@@ -114,6 +114,10 @@ bool LinkLoader::loadLink(const LinkRelAttribute& relAttribute, const String& ty
             return false;
         Resource::Type type = relAttribute.isLinkSubresource() ?  Resource::LinkSubresource : Resource::LinkPrefetch;
         FetchRequest linkRequest(ResourceRequest(document.completeURL(href)), FetchInitiatorTypeNames::link);
+        if (!crossOriginMode.isNull()) {
+            StoredCredentials allowCredentials = equalIgnoringCase(crossOriginMode, "use-credentials") ? AllowStoredCredentials : DoNotAllowStoredCredentials;

[abarth-chromium, 2014/01/28 06:38:45]

It's even twice in this CL.  :)

+            linkRequest.setCrossOriginAccessControl(document.securityOrigin(), allowCredentials);
+        }
         setResource(document.fetcher()->fetchLinkResource(type, linkRequest));
     }