Make NativeMediaFileUtil an AsyncFileUtil

chrome/browser/media_galleries/fileapi/itunes/itunes_file_util.h

Index: chrome/browser/media_galleries/fileapi/itunes/itunes_file_util.h
diff --git a/chrome/browser/media_galleries/fileapi/itunes/itunes_file_util.h b/chrome/browser/media_galleries/fileapi/itunes/itunes_file_util.h
index c4e1349b8cbdce4d13de0b28295a20cbd7a572c1..be186252841e5c26962143a2ac1b3af3cfaae53b 100644
--- a/chrome/browser/media_galleries/fileapi/itunes/itunes_file_util.h
+++ b/chrome/browser/media_galleries/fileapi/itunes/itunes_file_util.h
@@ -14,18 +14,17 @@ class ItunesFileUtil : public chrome::NativeMediaFileUtil {
   ItunesFileUtil();
   virtual ~ItunesFileUtil();
 
-  // Overrides from NativeMediaFileUtil
-  virtual base::PlatformFileError GetFileInfo(
+ private:
+  // NativeMediaFileUtil overrides.
+  virtual base::PlatformFileError GetFileInfoSync(
       fileapi::FileSystemOperationContext* context,
       const fileapi::FileSystemURL& url,
       base::PlatformFileInfo* file_info,
       base::FilePath* platform_path) OVERRIDE;
-
-  // Paths are enumerated in lexicographical order.
-  virtual scoped_ptr<AbstractFileEnumerator> CreateFileEnumerator(
+  virtual base::PlatformFileError ReadDirectorySync(
       fileapi::FileSystemOperationContext* context,
-      const fileapi::FileSystemURL& url) OVERRIDE;
-
+      const fileapi::FileSystemURL& url,
+      EntryList* file_list) OVERRIDE;
   virtual base::PlatformFileError GetLocalFilePath(
       fileapi::FileSystemOperationContext* context,
       const fileapi::FileSystemURL& url,