Describe the bug
Flip camera icon is showing on firefox

To Reproduce
Steps to reproduce the behavior:

1. Run the app on firefox

Expected behavior
Flip camera icon should not show.

Screenshots

**Environment (please complete

Former title: lastRequest and lastResponse in HttpClient should be volatile

Version:

7.22.0

Code Snippet

HttpClient.java

private Response lastResponse;  // missing volatile
private Request lastRequest;  // missing volatile

Steps to Reproduce

The lastRequest and lastResponse members in HttpClient should be volatile because the class is indirectly used as a

Style disabled forward (or back) arrow so that it is faded from its enabled (white) style instead of faded dark gray.

This is a minor adjustment.. it would be a major project to set up my development environment. So, here is the minor change I would do if I could do it.