Delete class SSRCDatabase, and its global ssrc registry.

webrtc/voice_engine/test/auto_test/standard/rtp_rtcp_test.cc

Index: webrtc/voice_engine/test/auto_test/standard/rtp_rtcp_test.cc
diff --git a/webrtc/voice_engine/test/auto_test/standard/rtp_rtcp_test.cc b/webrtc/voice_engine/test/auto_test/standard/rtp_rtcp_test.cc
index b736aac420d5add4f3931d76a77537eb78cc3ba9..0cb999029c816c33fb323ebbfc7278a6c304ca79 100644
--- a/webrtc/voice_engine/test/auto_test/standard/rtp_rtcp_test.cc
+++ b/webrtc/voice_engine/test/auto_test/standard/rtp_rtcp_test.cc
@@ -91,9 +91,10 @@ TEST_F(RtpRtcpTest, RemoteRtcpCnameHasPropagatedToRemoteSide) {
     return;
   }
 
-  // We need to sleep a bit here for the name to propagate. For instance,
-  // 200 milliseconds is not enough, so we'll go with one second here.
-  Sleep(1000);
+  // We need to sleep a bit here for the name to propagate. For
+  // instance, 200 milliseconds is not enough, 1 second still flaky,
+  // so we'll go with five seconds here.
+  Sleep(5000);
 
   char char_buffer[256];
   voe_rtp_rtcp_->GetRemoteRTCP_CNAME(channel_, char_buffer);