RFR: 8253935: [testbug] ComboBoxTest.testEditorKeyInputsWhenPopupIsShowing fails on Mac, Linux [v3]

[Ambarish Rapte]

> The test fails on Mac and Linux.
> Cause of failure:
> - Linux: Unlike Windows, on Linux CTRL + Arrow keys move the caret to end/beginning of current word and not to
>   beginning/end of next word.
> - Mac: On Mac correct keys to traverse through words is ALT + Arrow and not CTRL + Arrow. And like on Linux, ALT + Arrow
>   keys move the caret to end/beginning of current word and not to beginning/end of next word.
> 
> Fix is to use correct keys and asserts according to platform.

Ambarish Rapte has updated the pull request incrementally with one additional commit since the last revision:

  use getShourtcutKey()

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

Changes:
  - all: https://git.openjdk.java.net/jfx/pull/317/files
  - new: https://git.openjdk.java.net/jfx/pull/317/files/7347a4dd..2ca7e1e8

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jfx&pr=317&range=02
 - incr: https://webrevs.openjdk.java.net/?repo=jfx&pr=317&range=01-02

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.java.net/jfx/pull/317.diff
  Fetch: git fetch https://git.openjdk.java.net/jfx pull/317/head:pull/317

PR: https://git.openjdk.java.net/jfx/pull/317