This roll includes:
  - [inspector_protocol] remove old style domains support
  - Add missing virtual destructor to backend callbacks. [2]

[1] https://codereview.chromium.org/2479693002/
[2] https://codereview.chromium.org/2473393002/

BUG=none
R=dgozman@chromium.org

Review-Url: https://codereview.chromium.org/2478853002
Cr-Commit-Position: refs/heads/master@{#40784}