[Chromedriver] Chromedriver should handle unexpected alert automatically.

chrome/test/chromedriver/chrome/chrome_android_impl.h

Index: chrome/test/chromedriver/chrome/chrome_android_impl.h
diff --git a/chrome/test/chromedriver/chrome/chrome_android_impl.h b/chrome/test/chromedriver/chrome/chrome_android_impl.h
index f7564b0b50cf0b18d296094ef350a608c597d505..54ec6040900f94c1dc37c28a67764406485fd04b 100644
--- a/chrome/test/chromedriver/chrome/chrome_android_impl.h
+++ b/chrome/test/chromedriver/chrome/chrome_android_impl.h
@@ -22,6 +22,7 @@ class ChromeAndroidImpl : public ChromeImpl {
       std::unique_ptr<DevToolsClient> websocket_client,
       ScopedVector<DevToolsEventListener>& devtools_event_listeners,
       std::unique_ptr<PortReservation> port_reservation,
+      std::string unexpected_alert_behaviour,
       std::string page_load_strategy,
       std::unique_ptr<Device> device);
   ~ChromeAndroidImpl() override;