Lowered the allowed jitter in the api calls to a reasonable level

This CL reduces the allowed jitter in the api calls to a reasonable
level in order to ensure a quicker revery from audio path glitches.

BUG=webrtc:8224, chromium:763775

Review-Url: https://codereview.webrtc.org/3009273002
Cr-Original-Commit-Position: refs/heads/master@{#19772}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: ea154106a81f2f8f08850a19caee09834283a673