Fix deadlock in RegisterPreDecodeImageCallback.

Fixes lock-order inversion between ViEChannel::callback_cs_ and
VideoReceiver::_receiveCritSect detected on DrMemory Full which
exhibited different timing behavior.

Also removes most of the suppressions on DrMemory Full as they're able
to run again without deadlocking.

BUG=3336,3375
TEST=Run DrMemory Full trybots.
R=mflodman@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/20499004

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@6228 4adac7df-926f-26a2-2b94-8c16560cd09d
2 files changed