Issue Overview

In #1820, a gallery prop was added to the MediaUploadButton component, which is used to select a custom workflow for creating an image gallery. This works, but it seems like a better solution might be to let components using MediaUploadButton pass a custom workflow (e.g., wp.media.frame ) to the MediaUploadButton instead, since we're likely going to need custom workflows for many different kinds of media blocks that access the media modal.

Related Issues and/or PRs

• 1820