Media Galleries API Metadata: Rename MediaFileSystemMetadata callback.

chrome/common/extensions/api/media_galleries.idl

Index: chrome/common/extensions/api/media_galleries.idl
diff --git a/chrome/common/extensions/api/media_galleries.idl b/chrome/common/extensions/api/media_galleries.idl
index 1e0e2a118da1b313872384b8fa426b43b2cd4e17..2fda5fc5109720b7ea6eab1d1b03ab764152071a 100644
--- a/chrome/common/extensions/api/media_galleries.idl
+++ b/chrome/common/extensions/api/media_galleries.idl
@@ -50,7 +50,7 @@ namespace mediaGalleries {
     boolean isAvailable;
   };
 
-  callback MediaGalleriesMetadataCallback =
+  callback MediaFileSystemsMetadataCallback =
       void (MediaFileSystemMetadata[] metadata);
 
   interface Functions {
@@ -65,7 +65,7 @@ namespace mediaGalleries {
 
     // Get metadata for all available media galleries.
     static void getAllMediaFileSystemMetadata(
-        MediaGalleriesMetadataCallback callback);
+        MediaFileSystemsMetadataCallback callback);
   };
 
 };