Bluetooth UI: A "connecting" overlay is shown after enter a pin code.

chrome/browser/ui/webui/options/chromeos/bluetooth_options_handler.h

Index: chrome/browser/ui/webui/options/chromeos/bluetooth_options_handler.h
diff --git a/chrome/browser/ui/webui/options/chromeos/bluetooth_options_handler.h b/chrome/browser/ui/webui/options/chromeos/bluetooth_options_handler.h
index 7fe9121386248f9f9db10c5935bb15303a44be5e..1495ba6b13e4e3b73d6c31160d0847e7fe8ba92b 100644
--- a/chrome/browser/ui/webui/options/chromeos/bluetooth_options_handler.h
+++ b/chrome/browser/ui/webui/options/chromeos/bluetooth_options_handler.h
@@ -135,6 +135,9 @@ class BluetoothOptionsHandler
                              device::BluetoothDevice* device) OVERRIDE;
 
  private:
+  // Displays in the UI a connecting to the device |device| message.
+  void DeviceConnecting(device::BluetoothDevice* device);
+
   // Called by device::BluetoothAdapter in response to a failure to
   // change the power status of the adapter.
   void EnableChangeError();