RFR: JDK-8282777: Create a Regression test for JDK-4515031 [v5]

[Srinivas Mandalika]

> Create a Regression test for [JDK-4515031](https://bugs.openjdk.java.net/browse/JDK-4515031)
> 
> The issue indicates the need for a a getAccessibleDescription being implemented for the JFileChooser.
> The test added verifies the same.
> This review is for migrating tests from a closed test suite to open.

Srinivas Mandalika has updated the pull request incrementally with one additional commit since the last revision:

  Review comment fixed: removed redundant rbot code.

-------------

Changes:
  - all: https://git.openjdk.java.net/jdk/pull/7738/files
  - new: https://git.openjdk.java.net/jdk/pull/7738/files/2dc9771d..194e4dbc

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=7738&range=04
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=7738&range=03-04

  Stats: 5 lines in 1 file changed: 0 ins; 5 del; 0 mod
  Patch: https://git.openjdk.java.net/jdk/pull/7738.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk pull/7738/head:pull/7738

PR: https://git.openjdk.java.net/jdk/pull/7738