Clean backport. Tested in connection with 4 other WebKit fixes in the `test-kcr-11.0.19` branch, including a successful CI build. I also verfied that the native WebKit code is identical to mainline jfx after applying all patches (excluding a couple of copyright years).
------------- Commit messages: - 8298167: Opacity in WebView not working anymore Changes: https://git.openjdk.org/jfx11u/pull/131/files Webrev: https://webrevs.openjdk.org/?repo=jfx11u&pr=131&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8298167 Stats: 76 lines in 3 files changed: 72 ins; 0 del; 4 mod Patch: https://git.openjdk.org/jfx11u/pull/131.diff Fetch: git fetch https://git.openjdk.org/jfx11u pull/131/head:pull/131 PR: https://git.openjdk.org/jfx11u/pull/131
