receive a signal level to use initially, instead of the
default initial signal level.
BUG=
Review-Url: https://codereview.webrtc.org/2254973003
Cr-Commit-Position: refs/heads/master@{#13931}
I saw this when browsing the code, I think the intended behavior is accumulating to a float.
BUG=none
Review-Url: https://codereview.webrtc.org/2268163004
Cr-Commit-Position: refs/heads/master@{#13918}