Add vertex format queries to Renderer. With the new support for vertex formats living in the format utils, we can use the Renderer class to query vertex properties instead of the VertexBuffer class. Change-Id: Id76bd4dbf63855016faccef703521887f50da3b9 Reviewed-on: https://chromium-review.googlesource.com/184521 Reviewed-by: Geoff Lang <geofflang@chromium.org> Reviewed-by: Nicolas Capens <nicolascapens@chromium.org> Tested-by: Jamie Madill <jmadill@chromium.org>