The new test checks that json strings are unchanged when parsing to a
config and back to a string. This ensures that everything in the json
representations is parsed when created a config from the json.
This CL also adds the render_levels config substruct to the JSON parser.
Some issues were surfaced by the new test:
- Config validation clamping silently passed NaNs
- Config validation only fixed the first out-of-bounds parameter, and
not any subsequent ones
- Config validation did not check all values in the config
Bug: webrtc:9535
Change-Id: Ie7b588731dc1fe26ba71d1eb2f177f3b3b8139e3
Reviewed-on: https://webrtc-review.googlesource.com/c/107120
Commit-Queue: Sam Zackrisson <saza@webrtc.org>
Reviewed-by: Per Åhgren <peah@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#25310}