bluetooth: android: Initial basic Descriptors implementation.

device/bluetooth/test/bluetooth_test_android.cc

Index: device/bluetooth/test/bluetooth_test_android.cc
diff --git a/device/bluetooth/test/bluetooth_test_android.cc b/device/bluetooth/test/bluetooth_test_android.cc
index ef047fab857b1554dda8aba7bb374af404199511..1d1498cbf69b61074777280a54de34843e615c2d 100644
--- a/device/bluetooth/test/bluetooth_test_android.cc
+++ b/device/bluetooth/test/bluetooth_test_android.cc
@@ -15,6 +15,7 @@
 #include "device/bluetooth/bluetooth_adapter_android.h"
 #include "device/bluetooth/bluetooth_device_android.h"
 #include "device/bluetooth/bluetooth_remote_gatt_characteristic_android.h"
+#include "device/bluetooth/bluetooth_remote_gatt_descriptor_android.h"
 #include "device/bluetooth/bluetooth_remote_gatt_service_android.h"
 #include "device/bluetooth/test/test_bluetooth_adapter_observer.h"
 #include "jni/Fakes_jni.h"
@@ -264,6 +265,18 @@ void BluetoothTestAndroid::
       characteristic_android->GetJavaObject().obj());
 }
 
+void BluetoothTestAndroid::SimulateGattDescriptor(
+    BluetoothGattCharacteristic* characteristic,
+    const std::string& uuid) {
+  BluetoothRemoteGattCharacteristicAndroid* characteristic_android =
+      static_cast<BluetoothRemoteGattCharacteristicAndroid*>(characteristic);
+  JNIEnv* env = base::android::AttachCurrentThread();
+
+  Java_FakeBluetoothGattCharacteristic_addDescriptor(
+      env, characteristic_android->GetJavaObject().obj(),
+      base::android::ConvertUTF8ToJavaString(env, uuid).obj());
+}
+
 void BluetoothTestAndroid::OnFakeBluetoothDeviceConnectGattCalled(
     JNIEnv* env,
     const JavaParamRef<jobject>& caller) {