bluetooth: android: Fix a couple of crashes when adapter is turned on/off.

device/bluetooth/test/bluetooth_test_android.h

Index: device/bluetooth/test/bluetooth_test_android.h
diff --git a/device/bluetooth/test/bluetooth_test_android.h b/device/bluetooth/test/bluetooth_test_android.h
index b2bec9d5e71cd556a83980fe0f35fe7f203e5146..9c3531d4e3202aadfe5ec3b95cf2c8029217f17c 100644
--- a/device/bluetooth/test/bluetooth_test_android.h
+++ b/device/bluetooth/test/bluetooth_test_android.h
@@ -70,6 +70,10 @@ class BluetoothTestAndroid : public BluetoothTestBase {
   void SimulateGattDescriptorWriteWillFailSynchronouslyOnce(
       BluetoothGattDescriptor* descriptor) override;
 
+  // Instruct the fake adapter to throw an IllegalStateException for
+  // startScan and stopScan.
+  void ForceIllegalStateException();
+
   // Records that Java FakeBluetoothDevice connectGatt was called.
   void OnFakeBluetoothDeviceConnectGattCalled(
       JNIEnv* env,