UserAgent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/62.0.3202.94 Safari/537.36

Steps to reproduce the problem:
1. Using WebRequest API, I am able to see request details, headers and response status, headers etc but not response body.
2. 
3. 

What is the expected behavior?

What went wrong?
Using WebRequest API, I am able to see request details, headers and response status, headers etc but not response body.

Did this work before? N/A 

Does this work in other browsers? No
 I am creating a chrome extension that records all the requests fired in browser and response generated.

Using WebRequest API, I am able to see request details, headers and response status, headers etc but not response body.

Chrome version: 62.0.3202.94  Channel: stable
OS Version: OS X 10.12.6
Flash Version: