[Loader] Make ThreadableLoader non-RefCounted and be managed by OwnPtr

third_party/WebKit/Source/modules/fetch/FetchBlobDataConsumerHandle.cpp

Index: third_party/WebKit/Source/modules/fetch/FetchBlobDataConsumerHandle.cpp
diff --git a/third_party/WebKit/Source/modules/fetch/FetchBlobDataConsumerHandle.cpp b/third_party/WebKit/Source/modules/fetch/FetchBlobDataConsumerHandle.cpp
index 01016800c2ca73813452f96c551ce9436ff36c43..b56caee26df88a4ec6d5f0eec1bbe0feaba2ab20 100644
--- a/third_party/WebKit/Source/modules/fetch/FetchBlobDataConsumerHandle.cpp
+++ b/third_party/WebKit/Source/modules/fetch/FetchBlobDataConsumerHandle.cpp
@@ -100,7 +100,7 @@ public:
     }
 
 private:
-    PassRefPtr<ThreadableLoader> createLoader(ExecutionContext* executionContext, ThreadableLoaderClient* client) const
+    PassOwnPtr<ThreadableLoader> createLoader(ExecutionContext* executionContext, ThreadableLoaderClient* client) const
     {
         ThreadableLoaderOptions options;
         options.preflightPolicy = ConsiderPreflight;
@@ -151,14 +151,14 @@ private:
 
     RefPtr<BlobDataHandle> m_blobDataHandle;
     Persistent<FetchBlobDataConsumerHandle::LoaderFactory> m_loaderFactory;
-    RefPtr<ThreadableLoader> m_loader;
+    OwnPtr<ThreadableLoader> m_loader;
 
     bool m_receivedResponse;
 };
 
 class DefaultLoaderFactory final : public FetchBlobDataConsumerHandle::LoaderFactory {
 public:
-    PassRefPtr<ThreadableLoader> create(
+    PassOwnPtr<ThreadableLoader> create(
         ExecutionContext& executionContext,
         ThreadableLoaderClient* client,
         const ThreadableLoaderOptions& options,