When adapter A gets a discovery handle from |startDiscovery|, prior discovery handles held by either adapter A or other adapters should expire and stop listening to "DeviceFound" bluetooth signal.

Also reject promise of startDiscovery when discovery is already started, in order to inform applications to get a new discovery handle from another startDiscovery call.

Comment on attachment 8454231 [details] [diff] [review] Patch 1 (v1): Make BluetoothDiscoveryHandle expire when discovery is stopped Review of attachment 8454231 [details] [diff] [review]: ----------------------------------------------------------------- r=me with nit addressed. ::: dom/bluetooth2/BluetoothAdapter.cpp @@ +400,5 @@ > } > > +void > +BluetoothAdapter::SetDiscoveryHandleInUse( > + nsRefPtr<BluetoothDiscoveryHandle> aDiscoveryHandle) nit: please do not pass a nsRefPtr as an argument since it's wasteful. https://developer.mozilla.org/en-US/docs/Using_nsCOMPtr/Getting_Started_Guide#nsCOMPtrs_in_function_signatures

Revise based on reviewer's comment.