Replace ASSERT by RTC_DCHECK in all non-test code.

webrtc/base/network.cc

Index: webrtc/base/network.cc
diff --git a/webrtc/base/network.cc b/webrtc/base/network.cc
index a999fcb45c57cb008c9c4b64c9156af073088863..c7343635dd0df89c865fe9b9aceed50d81d045b3 100644
--- a/webrtc/base/network.cc
+++ b/webrtc/base/network.cc
@@ -266,7 +266,7 @@ void NetworkManagerBase::MergeNetworkList(const NetworkList& new_networks,
       if (current_list.ips[0].family() == AF_INET) {
         stats->ipv4_network_count++;
       } else {
-        ASSERT(current_list.ips[0].family() == AF_INET6);
+        RTC_DCHECK(current_list.ips[0].family() == AF_INET6);
         stats->ipv6_network_count++;
       }
     }
@@ -302,7 +302,7 @@ void NetworkManagerBase::MergeNetworkList(const NetworkList& new_networks,
       if (!existing_net->active()) {
         *changed = true;
       }
-      ASSERT(net->active());
+      RTC_DCHECK(net->active());
       if (existing_net != net) {
         delete net;
       }
@@ -740,7 +740,7 @@ void BasicNetworkManager::StartUpdating() {
 }
 
 void BasicNetworkManager::StopUpdating() {
-  ASSERT(Thread::Current() == thread_);
+  RTC_DCHECK(Thread::Current() == thread_);
   if (!start_count_)
     return;
 
@@ -826,9 +826,9 @@ AdapterType BasicNetworkManager::GetAdapterTypeFromName(
 }
 
 IPAddress BasicNetworkManager::QueryDefaultLocalAddress(int family) const {
-  ASSERT(thread_ == Thread::Current());
-  ASSERT(thread_->socketserver() != nullptr);
-  ASSERT(family == AF_INET || family == AF_INET6);
+  RTC_DCHECK(thread_ == Thread::Current());
+  RTC_DCHECK(thread_->socketserver() != nullptr);
+  RTC_DCHECK(family == AF_INET || family == AF_INET6);
 
   std::unique_ptr<AsyncSocket> socket(
       thread_->socketserver()->CreateAsyncSocket(family, SOCK_DGRAM));
@@ -855,7 +855,7 @@ void BasicNetworkManager::UpdateNetworksOnce() {
   if (!start_count_)
     return;
 
-  ASSERT(Thread::Current() == thread_);
+  RTC_DCHECK(Thread::Current() == thread_);
 
   NetworkList list;
   if (!CreateNetworks(false, &list)) {