Use TaskRunnerTimer in LinkLoader

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

Index: third_party/WebKit/Source/core/html/HTMLLinkElement.h
diff --git a/third_party/WebKit/Source/core/html/HTMLLinkElement.h b/third_party/WebKit/Source/core/html/HTMLLinkElement.h
index 37eedb725436ad022f45647e26130c98f2ba00eb..92addf30251e95fa1fc484152cc933a91856d594 100644
--- a/third_party/WebKit/Source/core/html/HTMLLinkElement.h
+++ b/third_party/WebKit/Source/core/html/HTMLLinkElement.h
@@ -35,6 +35,7 @@
 #include "core/html/RelList.h"
 #include "core/loader/LinkLoader.h"
 #include "core/loader/LinkLoaderClient.h"
+#include "platform/WebTaskRunner.h"
 #include <memory>
 
 namespace blink {
@@ -140,6 +141,7 @@ class CORE_EXPORT HTMLLinkElement final : public HTMLElement,
   void didStopLinkPrerender() override;
   void didSendLoadForLinkPrerender() override;
   void didSendDOMContentLoadedForLinkPrerender() override;
+  RefPtr<WebTaskRunner> getLoadingTaskRunner() override;
 
   // From DOMTokenListObserver
   void valueWasSet() final;