Add throbber and status text to WebBluetooth chooser UI on non-Mac desktops

chrome/browser/ui/bluetooth/bluetooth_chooser_desktop.cc

Index: chrome/browser/ui/bluetooth/bluetooth_chooser_desktop.cc
diff --git a/chrome/browser/ui/bluetooth/bluetooth_chooser_desktop.cc b/chrome/browser/ui/bluetooth/bluetooth_chooser_desktop.cc
index d500dfb0bde1095d768d6f9ddc9881871841db24..c48a096c28078501469aae2094fc2cd348cf8a50 100644
--- a/chrome/browser/ui/bluetooth/bluetooth_chooser_desktop.cc
+++ b/chrome/browser/ui/bluetooth/bluetooth_chooser_desktop.cc
@@ -15,9 +15,13 @@ BluetoothChooserDesktop::BluetoothChooserDesktop(
 
 BluetoothChooserDesktop::~BluetoothChooserDesktop() {}
 
-void BluetoothChooserDesktop::SetAdapterPresence(AdapterPresence presence) {}
+void BluetoothChooserDesktop::SetAdapterPresence(AdapterPresence presence) {
+  bluetooth_chooser_controller_->UpdateAdapterPresence(presence);
+}
 
-void BluetoothChooserDesktop::ShowDiscoveryState(DiscoveryState state) {}
+void BluetoothChooserDesktop::ShowDiscoveryState(DiscoveryState state) {
+  bluetooth_chooser_controller_->UpdateDiscoveryState(state);
+}
 
 void BluetoothChooserDesktop::AddDevice(const std::string& device_id,
                                         const base::string16& device_name) {