[INTERNAL] m.ComboBox: screen readers support

Change-Id: I57fe41cca7f2d8655fe15c1ae8d2a9abd8a23c0e
[INTERNAL] m.Switch: remove unneeded auto-executing anonymous functions

Remove unneeded auto-executing anonymous functions
after migration to AMD.

Change-Id: I1d708613afb7bc04154fe459f0951e79f7c462be
Merge changes I1d708613,I57fe41cc

* changes:
  [INTERNAL] m.Switch: remove unneeded auto-executing anonymous functions
  [INTERNAL] m.ComboBox: screen readers support