Implement support for link type serviceworker in link elements.

third_party/WebKit/Source/core/html/LinkResource.h

Index: third_party/WebKit/Source/core/html/LinkResource.h
diff --git a/third_party/WebKit/Source/core/html/LinkResource.h b/third_party/WebKit/Source/core/html/LinkResource.h
index 7599d920560e0918089ff3414825f4dbab9ef34f..07c983c2fe5b4fa69c3ba3fbaf69bfe0ba022e86 100644
--- a/third_party/WebKit/Source/core/html/LinkResource.h
+++ b/third_party/WebKit/Source/core/html/LinkResource.h
@@ -31,6 +31,7 @@
 #ifndef LinkResource_h
 #define LinkResource_h
 
+#include "core/CoreExport.h"
 #include "core/fetch/FetchRequest.h"
 #include "platform/heap/Handle.h"
 #include "platform/weborigin/KURL.h"
@@ -41,13 +42,14 @@ namespace blink {
 class HTMLLinkElement;
 class LocalFrame;
 
-class LinkResource : public NoBaseWillBeGarbageCollectedFinalized<LinkResource>  {
+class CORE_EXPORT LinkResource : public NoBaseWillBeGarbageCollectedFinalized<LinkResource>  {
     WTF_MAKE_NONCOPYABLE(LinkResource); USING_FAST_MALLOC_WILL_BE_REMOVED(LinkResource);
 public:
     enum LinkResourceType {
         Style,
         Import,
-        Manifest
+        Manifest,
+        Other
     };
 
     explicit LinkResource(HTMLLinkElement*);