WifiScanningServiceImpl: Add PNO active scans map

Add a separate map for storing all PNO request to their corresponding
listeners.

BUG: 27167559
Change-Id: Ib8c98c06478687d3fde50f33f0843ae0f13f2431
1 file changed
tree: 5d9941e2dcd885cbec80d87ea87754d0c6ca27af
  1. service/
  2. tests/