In order to know that you are talking to the right website on the web, you need someone else that you trust to say they are who they say they are. That is a Certificate Authority. They verify that the example.com you are talking to is the actual example.com through math that's hard to fake. Currently, the process of performing this verification can be either done manually by a person or automatically through software depending on what the Certificate Authority supports. Chrome is planning on changing their policy to require that an automatic option be available for all Certificate Authorities, without necessarily taking away the manual option from those who still want to use it.