RFR: JDK-8371365 : Update javax/swing/JFileChooser/bug4759934.java to use Util.findComponent() [v2]

[Harshitha Onkar]

> /javax/swing/JFileChooser/bug4759934.java test changes related to addition of new method to Util - https://github.com/openjdk/jdk/pull/27944.

Harshitha Onkar has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:

 - unused import
 - Merge branch 'master' into Util_bug4759934
 - test update

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Changes:
  - all: https://git.openjdk.org/jdk/pull/28169/files
  - new: https://git.openjdk.org/jdk/pull/28169/files/35285891..f2d59e99

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=28169&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=28169&range=00-01

  Stats: 104030 lines in 1543 files changed: 59145 ins; 35438 del; 9447 mod
  Patch: https://git.openjdk.org/jdk/pull/28169.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/28169/head:pull/28169

PR: https://git.openjdk.org/jdk/pull/28169