Google Plus login via WebView not allowed : Disallowed Useragent

Google now disallows webview as useragent for login with google.
So for sign in with google are there any other alternatives?

Can we overide the useragent in fuse native webview host? Something like this below?

<preference name="OverrideUserAgent" value"Mozilla/5.0 Google" />

Here is the code for the google login webview

<WebView ux:Name="webViewGoogle" Url="{googleUrl}">
<EvaluateJS Handler="{googlePageLoaded}">
return { url : document.location.href };