Delete class SSRCDatabase, and its global ssrc registry.

webrtc/voice_engine/channel.h

Index: webrtc/voice_engine/channel.h
diff --git a/webrtc/voice_engine/channel.h b/webrtc/voice_engine/channel.h
index 6448349a8be87348d2e2d731f66012549828ae24..a4d73a7fdc83ac9e646ed1a82ce5ee7dbfdd85cf 100644
--- a/webrtc/voice_engine/channel.h
+++ b/webrtc/voice_engine/channel.h
@@ -17,6 +17,8 @@
 #include "webrtc/api/call/audio_sink.h"
 #include "webrtc/base/criticalsection.h"
 #include "webrtc/base/optional.h"
+#include "webrtc/base/random.h"
+#include "webrtc/base/timeutils.h"
 #include "webrtc/common_audio/resampler/include/push_resampler.h"
 #include "webrtc/common_types.h"
 #include "webrtc/modules/audio_coding/acm2/codec_manager.h"
@@ -518,6 +520,8 @@ class Channel
   bool _includeAudioLevelIndication;
   size_t transport_overhead_per_packet_;
   size_t rtp_overhead_per_packet_;
+  // For generation of random ssrc:s.
+  webrtc::Random random_;

[the sun, 2017/02/16 12:34:16]

You're only using this member in the ctor, why do you need it here?

[nisse-webrtc, 2017/02/16 12:58:16]

Good catch. I think I originally put it in the ChannelManager, and then that
didn't seem to work out.

Should I move it to ChannelManager, and move the SetLocalSsrc call one level up,
to ChannelManager::CreateChannel?

   // VoENetwork
   AudioFrame::SpeechType _outputSpeechType;
   // VoEVideoSync