Media gallery fixups for scoped_refptr<T> operator T* removal.

chrome/utility/media_galleries/image_metadata_extractor.h

Index: chrome/utility/media_galleries/image_metadata_extractor.h
diff --git a/chrome/utility/media_galleries/image_metadata_extractor.h b/chrome/utility/media_galleries/image_metadata_extractor.h
index 697876186c6fd2c6bb4a69183a837eb884f0c669..9f589598237a78117d54d0ec143ab23455005acf 100644
--- a/chrome/utility/media_galleries/image_metadata_extractor.h
+++ b/chrome/utility/media_galleries/image_metadata_extractor.h
@@ -9,6 +9,7 @@
 
 #include "base/basictypes.h"
 #include "base/callback_forward.h"
+#include "base/memory/ref_counted.h"
 
 namespace media {
 class DataSource;
@@ -64,7 +65,7 @@ class ImageMetadataExtractor {
  private:
   // Second half of the Extract method.
   void FinishExtraction(const DoneCallback& callback,
-                        net::DrainableIOBuffer* buffer);
+                        const scoped_refptr<net::DrainableIOBuffer>& buffer);
 
   bool extracted_;