CriteoBannerLoadTask
public CriteoBannerLoadTask(@NonNull
java.lang.ref.Reference<? extends android.webkit.WebView> webViewRef,
@NonNull
android.webkit.WebViewClient webViewClient,
@NonNull
Config config,
@NonNull
java.lang.String displayUrl)
Taking WebViewClient as a constructor as all WebView/CriteoBannerView methods must be called on
the same UI thread. WebView.getSettings().setJavaScriptEnabled() & WebView.setWebViewClient()
throws if not done in the onPostExecute() as onPostExecute runs on the UI thread