Themes: Remove Vimeo logic from `header_video_settings()`.

Following [39148] and [39128], this removes the mime type logic for
Vimeo URLs from `get_header_video_settings()` and removes remaining
Vimeo reference from `_validate_external_header_video()` docs.

Fixes #38544.
Built from https://develop.svn.wordpress.org/trunk@39165


git-svn-id: http://core.svn.wordpress.org/trunk@39105 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/class-wp-customize-manager.php

@@ -3757,7 +3757,7 @@ final class WP_Customize_Manager {
 	/**
 	 * Callback for validating the external_header_video value.
 	 *
-	 * Ensures that the provided URL is for YouTube or Vimeo.
+	 * Ensures that the provided URL is supported.
 	 *
 	 * @since 4.7.0
 	 *

wp-includes/theme.php

@@ -1385,8 +1385,6 @@ function get_header_video_settings() {
 
 	if ( preg_match( '#^https?://(?:www\.)?(?:youtube\.com/watch|youtu\.be/)#', $video_url ) ) {
 		$settings['mimeType'] = 'video/x-youtube';
-	} elseif ( preg_match( '#^https?://(.+\.)?vimeo\.com/.*#', $video_url ) ) {
-		$settings['mimeType'] = 'video/x-vimeo';
 	} elseif ( ! empty( $video_type['type'] ) ) {
 		$settings['mimeType'] = $video_type['type'];
 	}

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.7-beta2-39164';
+$wp_version = '4.7-beta2-39165';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.