As suggested by laforge@ and a conversation w/ the monorail folks, I'm going to try tracking V8 GN-Migration related issues by *just* using the Proj-GN-Migration-V8 label, and not using blocking/rollup bugs, so that we can use blocking for just tasks that truly need to be completed before other tasks can make progress.

This issue has been Available for over a year. If it's no longer important or seems unlikely to be fixed, please consider closing it out. If it is important, please re-triage the issue.

Sorry for the inconvenience if the bug really should have been left as Available. If you change it back, also remove the "Hotlist-Recharge-Cold" label.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

Probably obsolete due to  http://crbug.com/v8/6550