bluetooth: BluetoothAdapterDeleter used to control BluetoothAdapter destruction.

device/bluetooth/test/mock_bluetooth_adapter.cc

Index: device/bluetooth/test/mock_bluetooth_adapter.cc
diff --git a/device/bluetooth/test/mock_bluetooth_adapter.cc b/device/bluetooth/test/mock_bluetooth_adapter.cc
index 9938cc373286335e173cf155c16d89939e09c968..9e38d5fe60434188dae84b8a14186f1039f10350 100644
--- a/device/bluetooth/test/mock_bluetooth_adapter.cc
+++ b/device/bluetooth/test/mock_bluetooth_adapter.cc
@@ -14,6 +14,10 @@ MockBluetoothAdapter::MockBluetoothAdapter() {
 
 MockBluetoothAdapter::~MockBluetoothAdapter() {}
 
+void MockBluetoothAdapter::DeleteOnCorrectThread() {
+  delete this;
+};
+
 void MockBluetoothAdapter::AddDiscoverySession(
     const base::Closure& callback,
     const ErrorCallback& error_callback) {}