Bluetooth: Add support for pairing display notifications

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 79 matching lines @@
   //
   // This is used for Bluetooth 2.1 and later devices that support input
   // but not display, such as keyboards. The Passkey is a numeric in the
   // range 0-999999 and should be always presented zero-padded to six
   // digits.
   virtual void DisplayPasskey(
       device::BluetoothDevice* device, uint32 passkey) OVERRIDE;
 
   // device::BluetoothDevice::PairingDelegate override.
   //
+  // This method will be called when the Bluetooth daemon gets a notification
+  // of a key entered on the device |device| while pairing with the device
+  // using a PIN code or a Passkey.
+  //
+  // The UI will show a visual indication that a given key was pressed in the
+  // same pairing overlay where the PIN code or Passkey is displayed.
+  //
+  // A first call with |entered| as 0 will indicate that this notification
+  // mechanism is supported by the device allowing the UI to display this fact.
+  // A last call with |entered| as the length of the key plus one will indicate
+  // that the [enter] key was pressed.
+  virtual void KeysEntered(device::BluetoothDevice* device,
+                           uint32 entered) OVERRIDE;
+
+  // device::BluetoothDevice::PairingDelegate override.
+  //
   // This method will be called when the Bluetooth daemon requires that the
   // user confirm that the Passkey |passkey| is displayed on the screen
   // of the device |device| so that it may be authenticated, the UI will
   // display the passkey with accompanying instructions.
   //
   // This is used for Bluetooth 2.1 and later devices that support display,
   // such as other computers or phones. The Passkey is a numeric in the
   // range 0-999999 and should be always present zero-padded to six
   // digits.
   virtual void ConfirmPasskey(
@@ skipping 91 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_