RFR: 8359266: Delete the usage of AppContext in the GraphicsDevice

[Sergey Bylokhov]

On Fri, 20 Jun 2025 18:55:30 GMT, Alexey Ivanov <aivanov at openjdk.org> wrote:

> I mean that there's a _happens before_ relation each time the synchronized block is reach whereas with volatile, the _happens before_ relation is guaranteed only when the value of the variable changes.

I do not think that this is true "guaranteed only when the value of the variable changes".
>A write to a volatile field ([§8.3.1.4](https://docs.oracle.com/javase/specs/jls/se14/html/jls-8.html#jls-8.3.1.4)) happens-before every subsequent read of that field.

-------------

PR Review Comment: https://git.openjdk.org/jdk/pull/25818#discussion_r2159607617