I think the implication is that most of the code they are removing is not actual...

simonster on April 4, 2013 | parent | context | favorite | on: Blink: A rendering engine for the Chromium project

I think the implication is that most of the code they are removing is not actually code, but boilerplate/machine-generated build scripts/etc. Still, the number of LOC involved has little bearing on whether or not splitting from WebKit is a good idea.