This is very odd since the code generated by Weaver Xtreme Plus would be:
<!– Weaver Xtreme Plus Google Fonts –>
<link href=’//fonts.googleapis.com/css?family=Lora:400,700,400italic,700italic’ rel=’stylesheet’ type=’text/css’>
It does not generate href=’http://fonts.google…’, but simply the ‘//fonts.google…’. Using // is a widely used method for eliminating the need for http: or https: and will automatically conform to either of those two depending if the site is secure or not.
In fact, if you use CloudFlare (and everyone should!), the WordPress CloudFlare plugin automatically changes ALL “http://” and “https://” to simply “//” before the site is delivered from the server.
Can you provide a link to your site?