2015日本最帅最有名的10大AV男优最新排行榜（图）
Limited availability
百度 什么是大数据杀熟？ 所谓大数据杀熟，有人将其定义为互联网厂商利用自己所拥有的用户数据，对老用户实行价格歧视的行为。
This feature is not Baseline because it does not work in some of the most widely-used browsers.
Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The HTTP Permissions-Policy header picture-in-picture directive controls whether the current document is allowed to play a video in a Picture-in-Picture mode.
Specifically, where a defined policy blocks use of this feature, HTMLVideoElement.requestPictureInPicture() calls will throw a DOMException of type SecurityError.
Syntax
http
Permissions-Policy: picture-in-picture=<allowlist>;
<allowlist>-
A list of origins for which permission is granted to use the feature. See
Permissions-Policy> Syntax for more details.
Default policy
The default allowlist for picture-in-picture is *.
Specifications
| Specification |
|---|
| Picture-in-Picture # permissions-policy |