Enable all RampUpTest.UpDownUp* tests

With issue 2987 fixed, all these tests can be enabled without problems.

BUG=3010
R=stefan@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/9889004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@5693 4adac7df-926f-26a2-2b94-8c16560cd09d
Implement minimum transmit bitrate.

Utilizing minimum transmission bitrate prevents low remote bitrate
estimates (bitrate estimation dips) when encoding non-complex content
such as screenshare of a static image even though there's nothing wrong
with the link.

Requires pacing to be enabled for now, pending issue 3036.

BUG=3014
R=mflodman@webrtc.org, stefan@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/9719004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@5694 4adac7df-926f-26a2-2b94-8c16560cd09d
Re-landing "Routing SuspendChange to VideoSendStream::Stats"

This was originally committed as r5687, but reverted due to a flaky
test.

BUG=3040
R=stefan@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/9939004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@5695 4adac7df-926f-26a2-2b94-8c16560cd09d
Add max delay to trace based filters and enhances drop tail queues with delay statistics.

R=solenberg@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/9479004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@5696 4adac7df-926f-26a2-2b94-8c16560cd09d
Race condition in RTPSender

RTPSender::sending_media_ should be guarded by send_critsect_. Fix this
in GetSendSideDelay, SendPadData and TimeToSendPadding.
Also add appropriate thread annotations.

BUG=3029
R=stefan@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/9779004

git-svn-id: http://webrtc.googlecode.com/svn/trunk@5697 4adac7df-926f-26a2-2b94-8c16560cd09d
Stopping network threads before tearing down test

Also initializing suspended_in_stats_ to false.

TBR=stefan@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/9959005

git-svn-id: http://webrtc.googlecode.com/svn/trunk@5698 4adac7df-926f-26a2-2b94-8c16560cd09d
(Auto)update libjingle 63019975-> 63089643

git-svn-id: http://webrtc.googlecode.com/svn/trunk@5699 4adac7df-926f-26a2-2b94-8c16560cd09d