Move ThreadableLoader to Oilpan heap (2/3)

third_party/WebKit/Source/core/fileapi/FileReaderLoader.h

Index: third_party/WebKit/Source/core/fileapi/FileReaderLoader.h
diff --git a/third_party/WebKit/Source/core/fileapi/FileReaderLoader.h b/third_party/WebKit/Source/core/fileapi/FileReaderLoader.h
index dedf9c2fb0597df4d9a9384f114e5c88165d91bc..be30c0d222a52b8c7f50f4ceff0bffaaaeebbfe7 100644
--- a/third_party/WebKit/Source/core/fileapi/FileReaderLoader.h
+++ b/third_party/WebKit/Source/core/fileapi/FileReaderLoader.h
@@ -34,6 +34,7 @@
 #include "core/CoreExport.h"
 #include "core/fileapi/FileError.h"
 #include "core/loader/ThreadableLoaderClient.h"
+#include "platform/heap/Handle.h"
 #include "platform/weborigin/KURL.h"
 #include "wtf/Forward.h"
 #include "wtf/PtrUtil.h"
@@ -123,7 +124,7 @@ private:
 
     KURL m_urlForReading;
     bool m_urlForReadingIsStream;
-    std::unique_ptr<ThreadableLoader> m_loader;
+    Persistent<ThreadableLoader> m_loader;
 
     std::unique_ptr<ArrayBufferBuilder> m_rawData;
     bool m_isRawDataConverted;