Improve processing of Bluetooth device discovery on Windows.

device/bluetooth/bluetooth_low_energy_win.cc

Index: device/bluetooth/bluetooth_low_energy_win.cc
diff --git a/device/bluetooth/bluetooth_low_energy_win.cc b/device/bluetooth/bluetooth_low_energy_win.cc
index b47bc9af0137afd94144d327fe2035b90f89689a..cf1ad4b55049bc05d3673b5b60dd2d47f3b31b77 100644
--- a/device/bluetooth/bluetooth_low_energy_win.cc
+++ b/device/bluetooth/bluetooth_low_energy_win.cc
@@ -652,11 +652,15 @@ bool EnumerateKnownBluetoothLowEnergyDevices(
 }
 
 bool EnumerateKnownBluetoothLowEnergyServices(
-    BluetoothLowEnergyDeviceInfo* device_info,
+    const base::FilePath& device_path,
     ScopedVector<BluetoothLowEnergyServiceInfo>* services,
     std::string* error) {
-  return CollectBluetoothLowEnergyDeviceServices(
-      device_info->path, services, error);
+  if (!IsBluetoothLowEnergySupported()) {
+    *error = kPlatformNotSupported;
+    return false;
+  }
+
+  return CollectBluetoothLowEnergyDeviceServices(device_path, services, error);
 }
 
 bool ExtractBluetoothAddressFromDeviceInstanceIdForTesting(