[Rev 02] RFR: 8231692: Test Infrastructure: enhance KeyEventFirer to inject keyEvents into scene

[Jeanette Winzenburg]

The pull request has been updated with additional changes.

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

Added commits:
 - 92cd944e: changed as requested in review

Changes:
  - all: https://git.openjdk.java.net/jfx/pull/20/files
  - new: https://git.openjdk.java.net/jfx/pull/20/files/0366a0a5..92cd944e

Webrevs:
 - full: https://webrevs.openjdk.java.net/jfx/20/webrev.02
 - incr: https://webrevs.openjdk.java.net/jfx/20/webrev.01-02

  Issue: https://bugs.openjdk.java.net/browse/JDK-8231692
  Stats: 83 lines in 2 files changed: 10 ins; 65 del; 8 mod
  Patch: https://git.openjdk.java.net/jfx/pull/20.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/20/head:pull/20

PR: https://git.openjdk.java.net/jfx/pull/20