Only use PortAllocator on the network thread.

A previous CL started only using it on the worker thread, but it was
written before the network thread was introduced.

Review-Url: https://codereview.webrtc.org/1987093002
Cr-Original-Commit-Position: refs/heads/master@{#12802}
Cr-Mirrored-From: https://chromium.googlesource.com/external/webrtc
Cr-Mirrored-Commit: 91dd567feafdf832e8d0a47abec01def869d4f2b
diff --git a/api/peerconnection.cc b/api/peerconnection.cc
index dda0eeb..581159f 100644
--- a/api/peerconnection.cc
+++ b/api/peerconnection.cc
@@ -559,8 +559,8 @@
   // because its destruction fires signals (such as VoiceChannelDestroyed)
   // which will trigger some final actions in PeerConnection...
   session_.reset(nullptr);
-  // port_allocator_ lives on the worker thread and should be destroyed there.
-  worker_thread()->Invoke<void>([this] { port_allocator_.reset(nullptr); });
+  // port_allocator_ lives on the network thread and should be destroyed there.
+  network_thread()->Invoke<void>([this] { port_allocator_.reset(nullptr); });
 }
 
 bool PeerConnection::Initialize(
@@ -577,10 +577,10 @@
 
   port_allocator_ = std::move(allocator);
 
-  // The port allocator lives on the worker thread and should be initialized
+  // The port allocator lives on the network thread and should be initialized
   // there.
-  if (!worker_thread()->Invoke<bool>(rtc::Bind(
-          &PeerConnection::InitializePortAllocator_w, this, configuration))) {
+  if (!network_thread()->Invoke<bool>(rtc::Bind(
+          &PeerConnection::InitializePortAllocator_n, this, configuration))) {
     return false;
   }
 
@@ -1164,8 +1164,8 @@
 bool PeerConnection::SetConfiguration(const RTCConfiguration& configuration) {
   TRACE_EVENT0("webrtc", "PeerConnection::SetConfiguration");
   if (port_allocator_) {
-    if (!worker_thread()->Invoke<bool>(
-            rtc::Bind(&PeerConnection::ReconfigurePortAllocator_w, this,
+    if (!network_thread()->Invoke<bool>(
+            rtc::Bind(&PeerConnection::ReconfigurePortAllocator_n, this,
                       configuration))) {
       return false;
     }
@@ -2088,7 +2088,7 @@
   return nullptr;
 }
 
-bool PeerConnection::InitializePortAllocator_w(
+bool PeerConnection::InitializePortAllocator_n(
     const RTCConfiguration& configuration) {
   cricket::ServerAddresses stun_servers;
   std::vector<cricket::RelayServerConfig> turn_servers;
@@ -2128,7 +2128,7 @@
   return true;
 }
 
-bool PeerConnection::ReconfigurePortAllocator_w(
+bool PeerConnection::ReconfigurePortAllocator_n(
     const RTCConfiguration& configuration) {
   cricket::ServerAddresses stun_servers;
   std::vector<cricket::RelayServerConfig> turn_servers;
diff --git a/api/peerconnection.h b/api/peerconnection.h
index 8ba7e58..cf9e3b9 100644
--- a/api/peerconnection.h
+++ b/api/peerconnection.h
@@ -209,7 +209,7 @@
     return factory_->signaling_thread();
   }
 
-  rtc::Thread* worker_thread() const { return factory_->worker_thread(); }
+  rtc::Thread* network_thread() const { return factory_->network_thread(); }
 
   void PostSetSessionDescriptionFailure(SetSessionDescriptionObserver* observer,
                                         const std::string& error);
@@ -353,10 +353,10 @@
   DataChannel* FindDataChannelBySid(int sid) const;
 
   // Called when first configuring the port allocator.
-  bool InitializePortAllocator_w(const RTCConfiguration& configuration);
+  bool InitializePortAllocator_n(const RTCConfiguration& configuration);
   // Called when SetConfiguration is called. Only a subset of the configuration
   // is applied.
-  bool ReconfigurePortAllocator_w(const RTCConfiguration& configuration);
+  bool ReconfigurePortAllocator_n(const RTCConfiguration& configuration);
 
   // Storing the factory as a scoped reference pointer ensures that the memory
   // in the PeerConnectionFactoryImpl remains available as long as the
diff --git a/api/peerconnectionfactory.cc b/api/peerconnectionfactory.cc
index 9cb5b46..a91589a 100644
--- a/api/peerconnectionfactory.cc
+++ b/api/peerconnectionfactory.cc
@@ -287,7 +287,7 @@
     allocator.reset(new cricket::BasicPortAllocator(
         default_network_manager_.get(), default_socket_factory_.get()));
   }
-  worker_thread_->Invoke<void>(
+  network_thread_->Invoke<void>(
       rtc::Bind(&cricket::PortAllocator::SetNetworkIgnoreMask, allocator.get(),
                 options_.network_ignore_mask));