Integrated: 8249839: Cherry pick GTK WebKit 2.28.3 changes

[Arun Joseph]

On Thu, 23 Jul 2020 05:34:50 GMT, Arun Joseph <ajoseph at openjdk.org> wrote:

> Update to GTK WebKit 2.28.3
> https://webkitgtk.org/2020/07/09/webkitgtk2.28.3-released.html

This pull request has now been integrated.

Changeset: 926b5b6b
Author:    Arun Joseph <ajoseph at openjdk.org>
URL:       https://git.openjdk.java.net/jfx/commit/926b5b6b
Stats:     531 lines in 36 files changed: 64 ins; 379 del; 88 mod

8249839: Cherry pick GTK WebKit 2.28.3 changes

Reviewed-by: kcr, bchoudhary

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PR: https://git.openjdk.java.net/jfx/pull/271