WifiConnectivityManager: partial scan only when connected

Starts partial scan only when Wifi is connected and traffic
is heavy. This is to work around an issue that WifiInfo
tx/rx rate is not updated to reflect the Wifi state. Ideally
the tx/rx rate should have been reset to 0 when Wifi is
disconnected.

Bug: 28831562
Change-Id: Ifa415b14e2b216654ddd8a2a0c885754da489bef
Test: Wifi Framework Unit Tests, manual tests
1 file changed
tree: 89e866d89585e271e9e821547bc676008b241746
  1. service/
  2. tests/