UserAgent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.146 Safari/537.36

Steps to reproduce the problem:
1. Extract chromium-67.0.3371 tarball
2. Bootstrap GN
3. See it Fail

What is the expected behavior?
Bootstrap it and start to build chromium :)

What went wrong?
https://p.teknik.io/g2hgc

Did this work before? N/A 

Chrome version: 65.0.3325.146  Channel: canary
OS Version: 67.0.3371.0
Flash Version: 67.0.3371.0

A: 67.0.3370.0 works fine  

B: If we revert this commit all works https://chromium.googlesource.com/chromium/src/+/fc6c667444bc32760445ecbad2b4a610ef9da6cd%5E%21/#F0