This roll includes:
  - Support config.protocol.options which defines which part of protocol definition should be generated. [1]
  - [inspector_protocol] Allow custom json parser. [2]
  - [inspector_protocol] Allow overriding specific config values. [3]
  - [inspector_protocol] Fix NoneType error when parsing config_values. [4]
  - [inspector_protocol] Support chromium code style. [5]
  - [inspector_protocol] Support features for content/ generator. [6]
  - [inspector_protocol] Fixed domain_json["has_exports"] flag for exported domains [7]

[1] https://codereview.chromium.org/2482993002
[2] https://codereview.chromium.org/2490733002
[3] https://codereview.chromium.org/2482093004
[4] https://codereview.chromium.org/2490823002
[5] https://codereview.chromium.org/2495353004
[6] https://codereview.chromium.org/2509573006
[7] https://codereview.chromium.org/2515343005

BUG=none
R=dgozman@chromium.org

Review-Url: https://codereview.chromium.org/2523743003
Cr-Commit-Position: refs/heads/master@{#41195}