fade1790a724ccafd46ce9ccd20235f02d6e3d71

Also removes tracing to file in ApmTest because it leads to remaining files. BUG=4258 R=bjornv@webrtc.org, kjellander@webrtc.org Review URL: https://webrtc-codereview.appspot.com/52469004 Cr-Commit-Position: refs/heads/master@{#9175}
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