Add CPP API for BLE advertisments.

device/bluetooth/bluetooth_adapter.h

Index: device/bluetooth/bluetooth_adapter.h
diff --git a/device/bluetooth/bluetooth_adapter.h b/device/bluetooth/bluetooth_adapter.h
index d764ae97ea6e9e7291c3798e07ffc2bc691529a3..243fb0e5b4b0f28a766981d3b5bffd79a7f383d2 100644
--- a/device/bluetooth/bluetooth_adapter.h
+++ b/device/bluetooth/bluetooth_adapter.h
@@ -14,12 +14,14 @@
 #include "base/callback.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
+#include "device/bluetooth/bluetooth_advertisement.h"
 #include "device/bluetooth/bluetooth_audio_sink.h"
 #include "device/bluetooth/bluetooth_device.h"
 #include "device/bluetooth/bluetooth_export.h"
 
 namespace device {
 
+class BluetoothAdvertisement;
 class BluetoothDiscoveryFilter;
 class BluetoothDiscoverySession;
 class BluetoothGattCharacteristic;
@@ -370,6 +372,17 @@ class DEVICE_BLUETOOTH_EXPORT BluetoothAdapter
       const AcquiredCallback& callback,
       const BluetoothAudioSink::ErrorCallback& error_callback) = 0;
 
+  // Creates and registers an advertisement for broadcast over the LE channel.
+  // The created advertisement will be returned via the success callback.
+  using CreateAdvertisementCallback =
+      base::Callback<void(scoped_refptr<BluetoothAdvertisement>)>;
+  using CreateAdvertisementErrorCallback =
+      base::Callback<void(BluetoothAdvertisement::ErrorCode)>;
+  virtual void RegisterAdvertisement(
+      scoped_ptr<BluetoothAdvertisement::Data> advertisement_data,
+      const CreateAdvertisementCallback& callback,
+      const CreateAdvertisementErrorCallback& error_callback) = 0;
+
  protected:
   friend class base::RefCountedThreadSafe<BluetoothAdapter,
                                           BluetoothAdapterDeleter>;