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 7f39099b6635422548f9f1018f70ecfbf78221c0..3fb3a3348ba9509425baf8c51948e98234596928 100644
--- a/device/bluetooth/test/bluetooth_test_android.h
+++ b/device/bluetooth/test/bluetooth_test_android.h
@@ -71,6 +71,10 @@ 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,