Migrate Timer to TaskRunnerTimer in TextTrackLoader

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

Index: third_party/WebKit/Source/core/loader/TextTrackLoader.cpp
diff --git a/third_party/WebKit/Source/core/loader/TextTrackLoader.cpp b/third_party/WebKit/Source/core/loader/TextTrackLoader.cpp
index 05bb3c939a9ae0c9b32cd62d8510d7ac323bce4f..4cb33998cb1406c101783a23ddd71c29ea492533 100644
--- a/third_party/WebKit/Source/core/loader/TextTrackLoader.cpp
+++ b/third_party/WebKit/Source/core/loader/TextTrackLoader.cpp
@@ -26,6 +26,7 @@
 #include "core/loader/TextTrackLoader.h"
 
 #include "core/dom/Document.h"
+#include "core/dom/TaskRunnerHelper.h"
 #include "core/fetch/FetchInitiatorTypeNames.h"
 #include "core/fetch/FetchRequest.h"
 #include "core/fetch/RawResource.h"
@@ -40,7 +41,9 @@ TextTrackLoader::TextTrackLoader(TextTrackLoaderClient& client,
                                  Document& document)
     : m_client(client),
       m_document(document),
-      m_cueLoadTimer(this, &TextTrackLoader::cueLoadTimerFired),
+      m_cueLoadTimer(TaskRunnerHelper::get(TaskType::Networking, &document),
+                     this,
+                     &TextTrackLoader::cueLoadTimerFired),
       m_state(Idle),
       m_newCuesAvailable(false) {}