Add unit and layout test to <link rel=preconnect>

Source/core/loader/LinkLoader.h

Index: Source/core/loader/LinkLoader.h
diff --git a/Source/core/loader/LinkLoader.h b/Source/core/loader/LinkLoader.h
index 0cf7e290f0173bca06842fec046ead8bad296141..3a1f8d8a80cf5c59d8f3769380f3bbe3ff9d9e0e 100644
--- a/Source/core/loader/LinkLoader.h
+++ b/Source/core/loader/LinkLoader.h
@@ -45,12 +45,14 @@ namespace blink {
 
 class Document;
 class LinkRelAttribute;
+class NetworkHintsInterface;
 class PrerenderHandle;
 
 // The LinkLoader can load link rel types icon, dns-prefetch, subresource, prefetch and prerender.
 class CORE_EXPORT LinkLoader final : public ResourceOwner<Resource, ResourceClient>, public PrerenderClient {
     DISALLOW_ALLOCATION();
 public:
+

[Mike West, 2015/07/23 09:52:23]

Nit: No newline.

     explicit LinkLoader(LinkLoaderClient*);
     virtual ~LinkLoader();
 
@@ -64,8 +66,8 @@ public:
     virtual void didSendDOMContentLoadedForPrerender() override;
 
     void released();
-    bool loadLink(const LinkRelAttribute&, const AtomicString& crossOriginMode, const String& type, const String& as, const KURL&, Document&);
-    static bool loadLinkFromHeader(const String& headerValue, Document*);
+    bool loadLink(const LinkRelAttribute&, const AtomicString& crossOriginMode, const String& type, const String& as, const KURL&, Document&, const NetworkHintsInterface&);
+    static bool loadLinkFromHeader(const String& headerValue, Document*, const NetworkHintsInterface&);
 
     DECLARE_TRACE();