commit 1ca324f23770e17d19433ccd3a3b021870d709ca
author Bjorn Volcker <bjornv@webrtc.org> Mon Jun 29 12:57:29 2015
committer Bjorn Volcker <bjornv@webrtc.org> Mon Jun 29 12:57:42 2015
tree 0f1c14421b4012f8d7bbd86fb3754760bb71b10f
parent c6891248b5eedf0194add1f46cabfb655338459b

Adds UMA histogram for system delay jumps

Sudden platform system delay jumps can hurt AEC and we have no stats that monitor these jumps. How often do they occur, and when they are reported are they accurate?

This CL logs all jumps in both the reported and actual delay.

The histogram has been tested with a chromium build where a fake jump of 200 ms was applied after 5 seconds and it was registered correctly in chrome://histograms

BUG=488124
R=henrik.lundin@webrtc.org, peah@webrtc.org

Review URL: https://codereview.webrtc.org/1213733004.

Cr-Commit-Position: refs/heads/master@{#9513}