Fix the logic of counting the number of devices for Web Bluetooth chooser UMA

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 5457be97a116c69ecb270aee6d659530225c0bb8..19cad9b7c8ea02382046bf52fcc3db903a22a406 100644
--- a/content/browser/bluetooth/bluetooth_device_chooser_controller.cc
+++ b/content/browser/bluetooth/bluetooth_device_chooser_controller.cc
@@ -408,6 +408,7 @@ void BluetoothDeviceChooserController::GetDevice(
     return;
   }
 
+  device_ids_.clear();
   PopulateConnectedDevices();
   if (!chooser_.get()) {
     // If the dialog's closing, no need to do any of the rest of this.
@@ -505,8 +506,6 @@ void BluetoothDeviceChooserController::StartDeviceDiscovery() {
     return;
   }
 
-  device_ids_.clear();
-
   scanning_start_time_ = base::TimeTicks::Now();
 
   chooser_->ShowDiscoveryState(BluetoothChooser::DiscoveryState::DISCOVERING);
@@ -564,6 +563,7 @@ void BluetoothDeviceChooserController::OnBluetoothChooserEvent(
   switch (event) {
     case BluetoothChooser::Event::RESCAN:
       RecordRequestDeviceOutcome(OutcomeFromChooserEvent(event));
+      device_ids_.clear();
       PopulateConnectedDevices();
       DCHECK(chooser_);
       StartDeviceDiscovery();