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Twenty Sixteen: Add pre-connect resource hint for Google Fonts.

When using Google Fonts, pre-connect to https://fonts.gstatic.com to improve the performance downloading the webfont files.

Props westonruter.
Merges [43606] to the 4.9 branch.
Fixes #44668.



git-svn-id: https://develop.svn.wordpress.org/branches/4.9@43607 602fd350-edb4-49c9-b593-d223f7449a82
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peterwilsoncc committed Sep 3, 2018
1 parent d432dbf commit 577cf80a506d297c265ae810a068fe8d84fa4d78
Showing with 21 additions and 0 deletions.
  1. +21 −0 src/wp-content/themes/twentysixteen/functions.php
@@ -144,6 +144,27 @@ function twentysixteen_content_width() {
}
add_action( 'after_setup_theme', 'twentysixteen_content_width', 0 );
/**
* Add preconnect for Google Fonts.
*
* @since Twenty Sixteen 1.6
*
* @param array $urls URLs to print for resource hints.
* @param string $relation_type The relation type the URLs are printed.
* @return array $urls URLs to print for resource hints.
*/
function twentysixteen_resource_hints( $urls, $relation_type ) {
if ( wp_style_is( 'twentysixteen-fonts', 'queue' ) && 'preconnect' === $relation_type ) {
$urls[] = array(
'href' => 'https://fonts.gstatic.com',
'crossorigin',
);
}
return $urls;
}
add_filter( 'wp_resource_hints', 'twentysixteen_resource_hints', 10, 2 );
/**
* Registers a widget area.
*

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