Filter to latest build run in the chrome profiles
Filter to latest build run in the chrome profiles

Previously all information from the build database was included
in chrome profiles without any delineation between build runs.
This made chrome profiles difficult to comprehend.

This change now only writes the latest build run information
to the chrome profile.

ndmitchell/shake,ndmitchell/shake,ndmitchell/shake,ndmitchell/shake,ndmitchell/shake,ndmitchell/shake