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

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

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_UI_WEBUI_OPTIONS_CHROMEOS_BLUETOOTH_OPTIONS_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_OPTIONS_CHROMEOS_BLUETOOTH_OPTIONS_HANDLER_H_
 
 #include <string>
 
 #include "base/callback.h"
@@ skipping 117 matching lines @@
   virtual void AdapterPoweredChanged(device::BluetoothAdapter* adapter,
                                      bool powered) OVERRIDE;
   virtual void DeviceAdded(device::BluetoothAdapter* adapter,
                            device::BluetoothDevice* device) OVERRIDE;
   virtual void DeviceChanged(device::BluetoothAdapter* adapter,
                              device::BluetoothDevice* device) OVERRIDE;
   virtual void DeviceRemoved(device::BluetoothAdapter* adapter,
                              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();
 
   // Called by device::BluetoothAdapter in response to a failure to
   // set the adapter into discovery mode.
   void FindDevicesError();
 
   // Called by device::BluetoothAdapter in response to a failure to
   // remove the adapter from discovery mode.
@@ skipping 50 matching lines @@
   // than this object does.
   base::WeakPtrFactory<BluetoothOptionsHandler> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BluetoothOptionsHandler);
 };
 
 }  // namespace options
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_UI_WEBUI_OPTIONS_CHROMEOS_BLUETOOTH_OPTIONS_HANDLER_H_