Execute custom background modification.
Custom_Background::admin_load
Set up the enqueue for the CSS & JavaScript files.
Custom_Background::init
Set up the hooks for the Custom Background admin page.
Custom_Background::__construct
Constructor – Register administration header callback.
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Core_Upgrader::check_files
Compare the disk file checksums against the expected checksums.
Core_Upgrader::should_update_to_version
Determines if this WordPress Core version should update to an offered version or not.
Core_Upgrader::upgrade
Upgrade WordPress core.
Core_Upgrader::upgrade_strings
Initialize the upgrade strings.