RFR: 8340078: Open source several 2D tests [v3]

[Phil Race]

> Open source 5 Java2D related rendering tests.

Phil Race has updated the pull request incrementally with one additional commit since the last revision:

  8340078

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Changes:
  - all: https://git.openjdk.org/jdk/pull/21045/files
  - new: https://git.openjdk.org/jdk/pull/21045/files/2bf854f2..abb8caf5

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=21045&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=21045&range=01-02

  Stats: 2 lines in 1 file changed: 1 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/21045.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21045/head:pull/21045

PR: https://git.openjdk.org/jdk/pull/21045