8315876: Open source several Swing CSS related tests

[GoeLin]

I backport this for parity with 21.0.8-oracle

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8315876 needs maintainer approval

Issue

• JDK-8315876: Open source several Swing CSS related tests (Bug - P4 - Approved)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk21u-dev.git pull/1459/head:pull/1459
$ git checkout pull/1459

Update a local copy of the PR:
$ git checkout pull/1459
$ git pull https://git.openjdk.org/jdk21u-dev.git pull/1459/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 1459

View PR using the GUI difftool:
$ git pr show -t 1459

Using diff file

Download this PR as a diff file:
https://git.openjdk.org/jdk21u-dev/pull/1459.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back goetz! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

@GoeLin This change now passes all automated pre-integration checks.

ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.

After integration, the commit message for the final commit will be:

8315876: Open source several Swing CSS related tests

You can use pull request commands such as /summary, /contributor and /issue to adjust it as needed.

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[openjdk]

This backport pull request has now been updated with issue from the original commit.

[openjdk]

⚠️ @GoeLin This change is now ready for you to apply for maintainer approval. This can be done directly in each associated issue or by using the /approval command.

[mlbridge]

Webrevs

• 00: Full (e5132426)

[GoeLin]

/integrate

[openjdk]

Going to push as commit 5480432.

[openjdk]

@GoeLin Pushed as commit 5480432.

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