[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 156ebe31d5d71f679f6558ab08295f135f87d265..66347b39f39c2e49757000052dd61abec0ddfe30 100644
--- a/third_party/WebKit/Source/modules/fetch/FetchBlobDataConsumerHandle.cpp
+++ b/third_party/WebKit/Source/modules/fetch/FetchBlobDataConsumerHandle.cpp
@@ -13,6 +13,7 @@
 #include "platform/blob/BlobRegistry.h"
 #include "platform/blob/BlobURL.h"
 #include "platform/network/ResourceRequest.h"
+#include "wtf/OwnPtr.h"
 
 namespace blink {
 
@@ -101,7 +102,7 @@ public:
     }
 
 private:
-    PassRefPtr<ThreadableLoader> createLoader(ExecutionContext* executionContext, ThreadableLoaderClient* client) const
+    PassOwnPtr<ThreadableLoader> createLoader(ExecutionContext* executionContext, ThreadableLoaderClient* client) const
     {
         ThreadableLoaderOptions options;
         options.preflightPolicy = ConsiderPreflight;
@@ -152,14 +153,14 @@ 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,