Replace ASSERT by RTC_DCHECK in all non-test code.

webrtc/p2p/quic/quictransport.cc

Index: webrtc/p2p/quic/quictransport.cc
diff --git a/webrtc/p2p/quic/quictransport.cc b/webrtc/p2p/quic/quictransport.cc
index 51f9a2b0a3fb2805d64e531e208e9b7da357b606..aaa11ebfcb65dc185337eebb19b6b45762cbd6ee 100644
--- a/webrtc/p2p/quic/quictransport.cc
+++ b/webrtc/p2p/quic/quictransport.cc
@@ -10,6 +10,7 @@
 
 #include "webrtc/p2p/quic/quictransport.h"
 
+#include "webrtc/base/checks.h"
 #include "webrtc/p2p/base/p2ptransportchannel.h"
 
 namespace cricket {
@@ -87,7 +88,7 @@ void QuicTransport::DestroyTransportChannel(TransportChannelImpl* channel) {
 }
 
 bool QuicTransport::GetSslRole(rtc::SSLRole* ssl_role) const {
-  ASSERT(ssl_role != NULL);
+  RTC_DCHECK(ssl_role != NULL);
   *ssl_role = local_role_;
   return true;
 }