Custom_Image_Header::filter_upload_tabs()
Unused since 3.5.0.
Unused since 3.5.0.
Display last step of custom header image page.
Gets the details of default header images if defined.
Calculate width and height based on what the currently selected theme supports.
Get the ID of a previous crop from the same base image.
Gets the previously uploaded header images.
Adds contextual help.
Set up the hooks for the Custom Header admin page.
Insert an attachment and its metadata.
Execute JavaScript depending on step.