bluetooth: Perform an LE scan only

content/browser/bluetooth/bluetooth_device_chooser_controller.cc

Index: content/browser/bluetooth/bluetooth_device_chooser_controller.cc
diff --git a/content/browser/bluetooth/bluetooth_device_chooser_controller.cc b/content/browser/bluetooth/bluetooth_device_chooser_controller.cc
index d524f19a864af9ab0535804a44eb4ad78e27bf78..c7a8aec2aa0d3e8ada0e30cfb9942a3a32271148 100644
--- a/content/browser/bluetooth/bluetooth_device_chooser_controller.cc
+++ b/content/browser/bluetooth/bluetooth_device_chooser_controller.cc
@@ -148,8 +148,12 @@ std::unique_ptr<device::BluetoothDiscoveryFilter> ComputeScanFilter(
       services.insert(service.value());
     }
   }
+  // There isn't much support for GATT over BR/EDR from neither platforms nor
+  // devices so performing a Dual scan will find devices that the API is not
+  // able to interact with. To avoid wasting power and confusing users with
+  // devices they are not able to interact with, we only perform an LE Scan.
   auto discovery_filter = base::MakeUnique<device::BluetoothDiscoveryFilter>(
-      device::BLUETOOTH_TRANSPORT_DUAL);
+      device::BLUETOOTH_TRANSPORT_LE);
   for (const BluetoothUUID& service : services) {
     discovery_filter->AddUUID(service);
   }