When comboBox have focus, pressing Alt+Down (or Up) should render the popup which is not happening for Aqua L&F.
Fix is to add toggleAction for Alt+Down/Up keys as has been done for [MetalLookAndFeel](https://github.com/openjdk/jdk/blob/master/src/java.desktop/share/classes/javax/swing/plaf/metal/MetalLookAndFeel.java#L912) closed problemlisted test is used to check the fix. ------------- Commit messages: - 7148092: [macosx] When Alt+down arrow key is pressed, the combobox popup does not appear. Changes: https://git.openjdk.org/jdk/pull/10014/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=10014&range=00 Issue: https://bugs.openjdk.org/browse/JDK-7148092 Stats: 14 lines in 2 files changed: 14 ins; 0 del; 0 mod Patch: https://git.openjdk.org/jdk/pull/10014.diff Fetch: git fetch https://git.openjdk.org/jdk pull/10014/head:pull/10014 PR: https://git.openjdk.org/jdk/pull/10014
