Handle change of BLE address after pairing

device/bluetooth/bluetooth_device_chromeos.h

Index: device/bluetooth/bluetooth_device_chromeos.h
diff --git a/device/bluetooth/bluetooth_device_chromeos.h b/device/bluetooth/bluetooth_device_chromeos.h
index 358b1cd5a661d312e7398f2fb6669b884ec3591a..6969b33dd29c39fac106aae8109471adba175925 100644
--- a/device/bluetooth/bluetooth_device_chromeos.h
+++ b/device/bluetooth/bluetooth_device_chromeos.h
@@ -76,7 +76,7 @@ class DEVICE_BLUETOOTH_EXPORT BluetoothDeviceChromeOS
       const device::BluetoothUUID& uuid,
       const ConnectToServiceCallback& callback,
       const ConnectToServiceErrorCallback& error_callback) override;
-  void CreateGattConnection(
+  scoped_ptr<device::BluetoothGattConnection> CreateGattConnection(
       const GattConnectionCallback& callback,
       const ConnectErrorCallback& error_callback) override;
   void Pair(device::BluetoothDevice::PairingDelegate* pairing_delegate,
@@ -105,7 +105,9 @@ class DEVICE_BLUETOOTH_EXPORT BluetoothDeviceChromeOS
  protected:
   // BluetoothDevice override
   std::string GetDeviceName() const override;
-  void CreateGattConnectionImpl() override;
+  scoped_ptr<device::BluetoothGattConnection> CreateGattConnectionImpl()
+      override;
+  scoped_ptr<device::BluetoothGattConnection> ExistingGattConnection() override;
   void DisconnectGatt() override;
 
  private:
@@ -139,7 +141,8 @@ class DEVICE_BLUETOOTH_EXPORT BluetoothDeviceChromeOS
                        const ConnectErrorCallback& error_callback);
   void OnConnect(bool after_pairing,
                  const base::Closure& callback);
-  void OnCreateGattConnection(const GattConnectionCallback& callback);
+  void OnCreateGattConnection(device::BluetoothGattConnection* conn,
+                              const GattConnectionCallback& callback);
   void OnConnectError(bool after_pairing,
                       const ConnectErrorCallback& error_callback,
                       const std::string& error_name,