Supports VirtualDisplay for the input window mappings.

- Uses the regular expression to match the display unique id.
- Changes the config separator from comma to slash, since comma is used in
  virtual display unique id.
- Adds the example config for ActivityView.

Bug: 136039906
Test: manually with the example configs.
Change-Id: I51917d39c5cb11666dcb4fea69545f3075a024a7
2 files changed