Backout for https://github.com/openjdk/jdk/pull/20845. Removes additions to `BasicScrollBarUI` and removes the test `JComboBoxScrollFocusTest`. Original PR caused some tests to fail that indicate a memory leak.
Ran against clientlibs job, and all relevant tests pass (including the few tests that were failing from the original PR). ------------- Commit messages: - Initial commit for backout Changes: https://git.openjdk.org/jdk/pull/22346/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=22346&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8344914 Stats: 120 lines in 2 files changed: 0 ins; 120 del; 0 mod Patch: https://git.openjdk.org/jdk/pull/22346.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/22346/head:pull/22346 PR: https://git.openjdk.org/jdk/pull/22346
