I create my documents using Microsoft Word 2007. I then upload them to Google Docs so that they are always available for me to edit/rework.
In Word the default font for Headings is Cambria and for the Body style it's Calibri.
The problem is that Google Docs includes neither of these fonts.
Is there a way to add missing fonts to Google Docs or get it to preserve the existing document fonts?
No this is not possible. Google recently added more fonts to the list and they will continue adding I guess. They won't let you to upload your own fonts or using external ones (since the removed the ability to edit css/html), because there is going to be an issue if you are going to share the Document and your collaborators won't be able to view it properly. Also there is a privacy issue that might arise.
