Use BlobCallback in toBlob instead of FileCallback

third_party/WebKit/Source/modules/filesystem/FileSystemCallbacks.h

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 26 matching lines @@
 #include "wtf/Vector.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class DOMFileSystemBase;
 class DirectoryReaderBase;
 class EntriesCallback;
 class EntryCallback;
 class ErrorCallback;
-class FileCallback;
+class BlobCallback;
 class FileMetadata;
 class FileSystemCallback;
 class FileWriterBase;
 class FileWriterBaseCallback;
 class MetadataCallback;
 class ExecutionContext;
 class VoidCallback;
 
 class FileSystemCallbacksBase : public AsyncFileSystemCallbacks {
 public:
@@ skipping 86 matching lines @@
     void didCreateFileWriter(PassOwnPtr<WebFileWriter>, long long length) override;
 
 private:
     FileWriterBaseCallbacks(FileWriterBase*, FileWriterBaseCallback*, ErrorCallback*, ExecutionContext*);
     Persistent<FileWriterBase> m_fileWriter;
     Persistent<FileWriterBaseCallback> m_successCallback;
 };
 
 class SnapshotFileCallback final : public FileSystemCallbacksBase {
 public:
-    static PassOwnPtr<AsyncFileSystemCallbacks> create(DOMFileSystemBase*, const String& name, const KURL&, FileCallback*, ErrorCallback*, ExecutionContext*);
+    static PassOwnPtr<AsyncFileSystemCallbacks> create(DOMFileSystemBase*, const String& name, const KURL&, BlobCallback*, ErrorCallback*, ExecutionContext*);
     virtual void didCreateSnapshotFile(const FileMetadata&, PassRefPtr<BlobDataHandle> snapshot);
 
 private:
-    SnapshotFileCallback(DOMFileSystemBase*, const String& name, const KURL&, FileCallback*, ErrorCallback*, ExecutionContext*);
+    SnapshotFileCallback(DOMFileSystemBase*, const String& name, const KURL&, BlobCallback*, ErrorCallback*, ExecutionContext*);
     String m_name;
     KURL m_url;
-    Persistent<FileCallback> m_successCallback;
+    Persistent<BlobCallback> m_successCallback;
 };
 
 class VoidCallbacks final : public FileSystemCallbacksBase {
 public:
     static PassOwnPtr<AsyncFileSystemCallbacks> create(VoidCallback*, ErrorCallback*, ExecutionContext*, DOMFileSystemBase*);
     void didSucceed() override;
 
 private:
     VoidCallbacks(VoidCallback*, ErrorCallback*, ExecutionContext*, DOMFileSystemBase*);
     Persistent<VoidCallback> m_successCallback;
 };
 
 } // namespace blink
 
 #endif // FileSystemCallbacks_h