RFR: 8253696: WebEngine refuses to load local "file:///" CSS stylesheets when using JDK 15

[Kevin Rushforth]

On Mon, 5 Oct 2020 07:08:33 GMT, Arun Joseph <ajoseph at openjdk.org> wrote:

> Issue: In JDK15,
> [URLConnection](https://github.com/openjdk/jdk/blob/master/src/java.base/share/classes/sun/net/www/URLConnection.java)
> class overrode the getHeaderFields() methods to return properties, which previously returned an empty map from its
> super class.  Fix: Extract headers only when it's a HttpURLConnection, otherwise return an empty String.

Looks good. I think a single reviewer is sufficient, unless you want another pair of eyes on it.

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Marked as reviewed by kcr (Lead).

PR: https://git.openjdk.java.net/jfx/pull/314