Theme_Upgrader::install_strings

		$this->strings['remove_old_failed']   = __( 'Could not remove the old theme.' );
		$this->strings['process_failed']      = __( 'Theme update failed.' );
		$this->strings['process_success']     = __( 'Theme updated successfully.' );
	}

	/**
	 * Initialize the installation strings.
	 *
	 * @since 2.8.0
	 */
	public function install_strings() {
		$this->strings['no_package'] = __( 'Installation package not available.' );
		/* translators: %s: Package URL. */
		$this->strings['downloading_package'] = sprintf( __( 'Downloading installation package from %s&#8230;' ), '<span class="code">%s</span>' );
		$this->strings['unpack_package']      = __( 'Unpacking the package&#8230;' );
		$this->strings['installing_package']  = __( 'Installing the theme&#8230;' );
		$this->strings['remove_old']          = __( 'Removing the old version of the theme&#8230;' );
		$this->strings['remove_old_failed']   = __( 'Could not remove the old theme.' );
		$this->strings['no_files']            = __( 'The theme contains no files.' );
		$this->strings['process_failed']      = __( 'Theme installation failed.' );
		$this->strings['process_success']     = __( 'Theme installed successfully.' );