mozilla-b2g/gaia — pull request #2626 by benfrancis (2012-07-19 16:26:17+00:00)
Title: Adding browser start page, closes #1228

In this pull request:
* Store thumbnails for places, but only if they're currently in the top 6 sites (will need expiration to clean up old top 6 sites)
* Start page UI implemented as its own web page, loaded inside the browser tab and some hacks to treat it as a special page, not assign frecency to it and not display its real URL (will need a visual design pass as no visual design or assets provided yet)

Loading the thumbnails on the start page is currently a bit laggy and I'm not sure why, we could look at improving performance later.

The spec says the start page should be automatically added as a bookmark. I figure we can add this along with other default bookmarks in the build process.