Add CPP API for BLE advertisments.

device/bluetooth/bluetooth_adapter_chromeos.h

Index: device/bluetooth/bluetooth_adapter_chromeos.h
diff --git a/device/bluetooth/bluetooth_adapter_chromeos.h b/device/bluetooth/bluetooth_adapter_chromeos.h
index 39a23dec2c7a0edae10ec76aae2e890754746b55..a90bf5fd1f93ce200b7025850f4ba9c86bdd40b9 100644
--- a/device/bluetooth/bluetooth_adapter_chromeos.h
+++ b/device/bluetooth/bluetooth_adapter_chromeos.h
@@ -99,6 +99,11 @@ class DEVICE_BLUETOOTH_EXPORT BluetoothAdapterChromeOS
       const device::BluetoothAdapter::AcquiredCallback& callback,
       const device::BluetoothAudioSink::ErrorCallback& error_callback) override;
 
+  void RegisterAdvertisement(
+      scoped_ptr<device::BluetoothAdvertisement::Data> advertisement_data,
+      const CreateAdvertisementCallback& callback,
+      const CreateAdvertisementErrorCallback& error_callback) override;
+
   // Locates the device object by object path (the devices map and
   // BluetoothDevice methods are by address).
   BluetoothDeviceChromeOS* GetDeviceWithPath(