Joe McGill 030bc377dd Themes: Enable video in custom headers. ... This adds the ability for themes to add support for videos in custom headers by passing `'video' => true` as an argument when adding theme support for custom headers. Custom video headers are managed through the “Header Visuals” (i.e. “Header Image”) panel in the Customizer where you can select a video from the media library or set a URL to an external video (YouTube for now) for use in custom headers. This introduces several new functions: `has_header_video()` – Check whether a header video is set or not. `get_header_video_url()` – Retrieve header video URL for custom header. `the_header_video_url()` – Display header video URL. `get_header_video_settings()` – Retrieve header video settings. `has_custom_header()` – Check whether a custom header is set or not. `get_custom_header_markup()` – Retrieve the markup for a custom header. `the_custom_header_markup()` – Print the markup for a custom header. And a new file, `wp-includes/js/wp-custom-header.js` that handles loading videos in custom headers. This also enables video headers in the Twenty Seventeen and Twenty Fourteen themes. Props davidakennedy, celloexpressions, bradyvercher, laurelfulford, joemcgill. Fixes #38172. Built from https://develop.svn.wordpress.org/trunk@38985 git-svn-id: http://core.svn.wordpress.org/trunk@38928 1a063a9b-81f0-0310-95a4-ce76da25c4cd		2016-10-27 21:51:31 +00:00
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back-compat.php	Importing Twenty Seventeen, our new default theme for 2017, set for 4.7.	2016-10-20 04:12:31 +00:00
color-patterns.php	Twenty Seventeen: Refresh color patterns for changes in style.css	2016-10-25 20:00:42 +00:00
custom-header.php	Themes: Enable video in custom headers.	2016-10-27 21:51:31 +00:00
customizer.php	Themes: Enable video in custom headers.	2016-10-27 21:51:31 +00:00
icon-functions.php	Twenty Fifteen, Twenty Seventeen: Add documentation to filters in themes.	2016-10-20 20:34:31 +00:00
template-functions.php	Themes: Enable video in custom headers.	2016-10-27 21:51:31 +00:00
template-tags.php	Twenty Seventeen: Fixes incorrect use of _x()	2016-10-24 17:27:51 +00:00