Allow geolocation and file chooser simultaneously

Author: lucianoiam

android/src/main/java/com/flutter_webview_plugin/WebviewManager.java

@@ -243,6 +243,10 @@ public void onProgressChanged(WebView view, int progress) {
                 args.put("progress", progress / 100.0);
                 FlutterWebviewPlugin.channel.invokeMethod("onProgressChanged", args);
             }
+
+            public void onGeolocationPermissionsShowPrompt(String origin, GeolocationPermissions.Callback callback) {
+                callback.invoke(origin, true, false);
+            }
         });
     }
 
@@ -367,12 +371,6 @@ void openUrl(
 
         if (geolocationEnabled) {
             webView.getSettings().setGeolocationEnabled(true);
-            webView.setWebChromeClient(new WebChromeClient() {
-                @Override
-                public void onGeolocationPermissionsShowPrompt(String origin, GeolocationPermissions.Callback callback) {
-                    callback.invoke(origin, true, false);
-                }
-            });
         }
 
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {