UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_4) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/61.0.3152.0 Safari/537.36

Steps to reproduce the problem:
Follow steps from below link to setup chromium 

https://docs.google.com/document/d/1WNF-KqRSzPLUUfZqQG5AFeU_Ll8TfWYcJasa_XGf7ro/edit#heading=h.9t7np5fa400

What is the expected behavior?
I should be able to launch a devTools and debug it

What went wrong?
I get Error serving the file /front_end/InspectorBackendCommands.js: Error: Request error: + 404

This started happening only with chrome canary update.

Did this work before? Yes ~59

Chrome version: 61.0.3152.0  Channel: canary
OS Version: OS X 10.12.4
Flash Version:
 

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