Add CPP API for BLE advertisments.

device/bluetooth/test/mock_bluetooth_adapter.h

Index: device/bluetooth/test/mock_bluetooth_adapter.h
diff --git a/device/bluetooth/test/mock_bluetooth_adapter.h b/device/bluetooth/test/mock_bluetooth_adapter.h
index 37f6450068f9de6a089170fdc707398dbec189ae..e1523f9a6eb5793153290d1814994da3e30ef026 100644
--- a/device/bluetooth/test/mock_bluetooth_adapter.h
+++ b/device/bluetooth/test/mock_bluetooth_adapter.h
@@ -109,6 +109,10 @@ class MockBluetoothAdapter : public BluetoothAdapter {
   void SetDiscoveryFilter(scoped_ptr<BluetoothDiscoveryFilter> discovery_filter,
                           const base::Closure& callback,
                           const ErrorCallback& error_callback) override;
+  void RegisterAdvertisement(
+      scoped_ptr<BluetoothAdvertisement::Data> advertisement_data,
+      const CreateAdvertisementCallback& callback,
+      const CreateAdvertisementErrorCallback& error_callback) override;
   virtual ~MockBluetoothAdapter();
 
   MOCK_METHOD1(RemovePairingDelegateInternal,