Pass the correct webState to the nativeContent.

ios/web/public/test/fakes/test_native_content_provider.mm

Index: ios/web/public/test/fakes/test_native_content_provider.mm
diff --git a/ios/web/public/test/fakes/test_native_content_provider.mm b/ios/web/public/test/fakes/test_native_content_provider.mm
index 43994f340b55ce390e723cd87d454d13bfe93658..4a026aecd0bf7c4181952870a7a81a6a63943752 100644
--- a/ios/web/public/test/fakes/test_native_content_provider.mm
+++ b/ios/web/public/test/fakes/test_native_content_provider.mm
@@ -20,7 +20,8 @@
   return _nativeContent.find(URL) != _nativeContent.end();
 }
 
-- (id<CRWNativeContent>)controllerForURL:(const GURL&)URL {
+- (id<CRWNativeContent>)controllerForURL:(const GURL&)URL
+                                webState:(web::WebState*)webState {
   auto nativeContent = _nativeContent.find(URL);
   if (nativeContent == _nativeContent.end()) {
     return nil;