[RFR] 8211308: Support HTTP/2 in WebView

[Arunprasad Rajkumar]

Hi,

Please review the following Github PR which uses new HttpClient interface (introduced since JDK11[1]) to support HTTP/2.

https://github.com/javafxports/openjdk-jfx/pull/247

https://bugs.openjdk.java.net/browse/JDK-8211308

Note: There is a runtime property “com.sun.webkit.useHTTP2Loader" added to switch back to legacy interface. By default it is enabled to use new HttpClient interface.

[1] https://docs.oracle.com/en/java/javase/11/docs/api/java.net.http/java/net/http/package-summary.html

Thanks,
Arun