7391881f9762ccadeeb0249560b33cf2bcfaf7f9

Reason for revert:
The CL adds a global variable.
Original issue's description:
> Added send-thresholding and fixed text packet dumping. Also a little squelch for the over-max-MTU log spam we see in there.
>
> BUG=https://code.google.com/p/webrtc/issues/detail?id=4468
> R=pthatcher@chromium.org, pthatcher@webrtc.org
>
> Committed: d838d27919
TBR=pthatcher@webrtc.org,bemasc@webrtc.org,pthatcher@chromium.org,thakis@chromium.org,lally@webrtc.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=https://code.google.com/p/webrtc/issues/detail?id=4468
Review URL: https://codereview.webrtc.org/1315923003
Cr-Commit-Position: refs/heads/master@{#9796}
Revert of Added send-thresholding and fixed text packet dumping. (patchset #4 id:160001 of https://codereview.webrtc.org/1266033005/ )
Revert of Fix PRESUBMIT.py after disabling CQ. (patchset #1 id:1 of https://codereview.webrtc.org/1192673003/)
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