Move test_client.h to webrtc namespace

Bug: webrtc:42232595
Change-Id: Ie469504499563f6df54580a94706b1900a949a1f
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/380560
Auto-Submit: Evan Shrubsole <eshr@webrtc.org>
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Evan Shrubsole <eshr@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#44086}
diff --git a/p2p/test/nat_unittest.cc b/p2p/test/nat_unittest.cc
index 5e1d2be..4efd32f 100644
--- a/p2p/test/nat_unittest.cc
+++ b/p2p/test/nat_unittest.cc
@@ -45,7 +45,7 @@
 namespace rtc {
 namespace {
 
-bool CheckReceive(TestClient* client,
+bool CheckReceive(webrtc::TestClient* client,
                   bool should_receive,
                   const char* buf,
                   size_t size) {
@@ -53,14 +53,14 @@
                           : client->CheckNoPacket();
 }
 
-TestClient* CreateTestClient(SocketFactory* factory,
-                             const SocketAddress& local_addr) {
-  return new TestClient(
+webrtc::TestClient* CreateTestClient(SocketFactory* factory,
+                                     const SocketAddress& local_addr) {
+  return new webrtc::TestClient(
       absl::WrapUnique(AsyncUDPSocket::Create(factory, local_addr)));
 }
 
-TestClient* CreateTCPTestClient(Socket* socket) {
-  return new TestClient(std::make_unique<AsyncTCPSocket>(socket));
+webrtc::TestClient* CreateTCPTestClient(Socket* socket) {
+  return new webrtc::TestClient(std::make_unique<AsyncTCPSocket>(socket));
 }
 
 // Tests that when sending from internal_addr to external_addrs through the
@@ -86,10 +86,10 @@
   NATSocketFactory* natsf = new NATSocketFactory(
       internal, nat->internal_udp_address(), nat->internal_tcp_address());
 
-  TestClient* in;
+  webrtc::TestClient* in;
   th_int.BlockingCall([&] { in = CreateTestClient(natsf, internal_addr); });
 
-  TestClient* out[4];
+  webrtc::TestClient* out[4];
   th_ext.BlockingCall([&] {
     for (int i = 0; i < 4; i++)
       out[i] = CreateTestClient(external, external_addrs[i]);
@@ -147,10 +147,10 @@
   NATSocketFactory* natsf = new NATSocketFactory(
       internal, nat->internal_udp_address(), nat->internal_tcp_address());
 
-  TestClient* in = nullptr;
+  webrtc::TestClient* in = nullptr;
   th_int.BlockingCall([&] { in = CreateTestClient(natsf, internal_addr); });
 
-  TestClient* out[4];
+  webrtc::TestClient* out[4];
   th_ext.BlockingCall([&] {
     for (int i = 0; i < 4; i++)
       out[i] = CreateTestClient(external, external_addrs[i]);
@@ -413,8 +413,9 @@
   EXPECT_EQ(client_->GetRemoteAddress(), server_->GetLocalAddress());
   EXPECT_EQ(accepted_->GetRemoteAddress().ipaddr(), ext_addr_.ipaddr());
 
-  std::unique_ptr<rtc::TestClient> in(CreateTCPTestClient(client_.release()));
-  std::unique_ptr<rtc::TestClient> out(
+  std::unique_ptr<webrtc::TestClient> in(
+      CreateTCPTestClient(client_.release()));
+  std::unique_ptr<webrtc::TestClient> out(
       CreateTCPTestClient(accepted_.release()));
 
   const char* buf = "test_packet";
diff --git a/rtc_base/socket_unittest.cc b/rtc_base/socket_unittest.cc
index 11b40ee..6fe4b07 100644
--- a/rtc_base/socket_unittest.cc
+++ b/rtc_base/socket_unittest.cc
@@ -1060,9 +1060,9 @@
   delete socket;
 
   // Test send/receive behavior.
-  auto client1 = std::make_unique<TestClient>(
+  auto client1 = std::make_unique<webrtc::TestClient>(
       absl::WrapUnique(AsyncUDPSocket::Create(socket_factory_, addr1)));
-  auto client2 = std::make_unique<TestClient>(
+  auto client2 = std::make_unique<webrtc::TestClient>(
       absl::WrapUnique(AsyncUDPSocket::Create(socket_factory_, empty)));
 
   SocketAddress addr2;
@@ -1075,7 +1075,7 @@
   EXPECT_EQ(addr3, addr1);
   // TODO: figure out what the intent is here
   for (int i = 0; i < 10; ++i) {
-    client2 = std::make_unique<TestClient>(
+    client2 = std::make_unique<webrtc::TestClient>(
         absl::WrapUnique(AsyncUDPSocket::Create(socket_factory_, empty)));
 
     SocketAddress addr4;
@@ -1102,7 +1102,7 @@
   SocketAddress test_addr(dest, 2345);
 
   // Test send
-  auto client = std::make_unique<TestClient>(
+  auto client = std::make_unique<webrtc::TestClient>(
       absl::WrapUnique(AsyncUDPSocket::Create(socket_factory_, empty)));
   int test_packet_size = 1200;
   std::unique_ptr<char[]> test_packet(new char[test_packet_size]);
@@ -1282,20 +1282,22 @@
   SocketAddress address = socket->GetLocalAddress();
   socket = nullptr;
 
-  auto client1 = std::make_unique<TestClient>(
+  auto client1 = std::make_unique<webrtc::TestClient>(
       absl::WrapUnique(AsyncUDPSocket::Create(socket_factory_, address)));
-  auto client2 = std::make_unique<TestClient>(
+  auto client2 = std::make_unique<webrtc::TestClient>(
       absl::WrapUnique(AsyncUDPSocket::Create(socket_factory_, empty)));
 
   SocketAddress addr2;
   client2->SendTo("foo", 3, address);
-  std::unique_ptr<TestClient::Packet> packet_1 = client1->NextPacket(10000);
+  std::unique_ptr<webrtc::TestClient::Packet> packet_1 =
+      client1->NextPacket(10000);
   ASSERT_TRUE(packet_1 != nullptr);
   EXPECT_NEAR(packet_1->packet_time->us(), rtc::TimeMicros(), 1000'000);
 
   Thread::SleepMs(100);
   client2->SendTo("bar", 3, address);
-  std::unique_ptr<TestClient::Packet> packet_2 = client1->NextPacket(10000);
+  std::unique_ptr<webrtc::TestClient::Packet> packet_2 =
+      client1->NextPacket(10000);
   ASSERT_TRUE(packet_2 != nullptr);
   EXPECT_GT(packet_2->packet_time->us(), packet_1->packet_time->us());
   EXPECT_NEAR(packet_2->packet_time->us(), rtc::TimeMicros(), 1000'000);
diff --git a/rtc_base/test_client.cc b/rtc_base/test_client.cc
index 062da32..58409ea 100644
--- a/rtc_base/test_client.cc
+++ b/rtc_base/test_client.cc
@@ -28,17 +28,17 @@
 #include "rtc_base/thread.h"
 #include "rtc_base/time_utils.h"
 
-namespace rtc {
+namespace webrtc {
 
 // DESIGN: Each packet received is put it into a list of packets.
 //         Callers can retrieve received packets from any thread by calling
 //         NextPacket.
 
-TestClient::TestClient(std::unique_ptr<AsyncPacketSocket> socket)
+TestClient::TestClient(std::unique_ptr<rtc::AsyncPacketSocket> socket)
     : TestClient(std::move(socket), nullptr) {}
 
-TestClient::TestClient(std::unique_ptr<AsyncPacketSocket> socket,
-                       ThreadProcessingFakeClock* fake_clock)
+TestClient::TestClient(std::unique_ptr<rtc::AsyncPacketSocket> socket,
+                       rtc::ThreadProcessingFakeClock* fake_clock)
     : fake_clock_(fake_clock), socket_(std::move(socket)) {
   socket_->RegisterReceivedPacketCallback(
       [&](rtc::AsyncPacketSocket* socket, const rtc::ReceivedPacket& packet) {
@@ -49,10 +49,10 @@
 
 TestClient::~TestClient() {}
 
-bool TestClient::CheckConnState(AsyncPacketSocket::State state) {
+bool TestClient::CheckConnState(rtc::AsyncPacketSocket::State state) {
   // Wait for our timeout value until the socket reaches the desired state.
-  int64_t end = TimeAfter(kTimeoutMs);
-  while (socket_->GetState() != state && TimeUntil(end) > 0) {
+  int64_t end = rtc::TimeAfter(kTimeoutMs);
+  while (socket_->GetState() != state && rtc::TimeUntil(end) > 0) {
     AdvanceTime(1);
   }
   return (socket_->GetState() == state);
@@ -65,7 +65,7 @@
 
 int TestClient::SendTo(const char* buf,
                        size_t size,
-                       const SocketAddress& dest) {
+                       const rtc::SocketAddress& dest) {
   rtc::PacketOptions options;
   return socket_->SendTo(buf, size, dest, options);
 }
@@ -82,10 +82,10 @@
   // Pumping another thread's queue could lead to messages being dispatched from
   // the wrong thread to non-thread-safe objects.
 
-  int64_t end = TimeAfter(timeout_ms);
-  while (TimeUntil(end) > 0) {
+  int64_t end = rtc::TimeAfter(timeout_ms);
+  while (rtc::TimeUntil(end) > 0) {
     {
-      webrtc::MutexLock lock(&mutex_);
+      MutexLock lock(&mutex_);
       if (!packets_.empty()) {
         break;
       }
@@ -95,7 +95,7 @@
 
   // Return the first packet placed in the queue.
   std::unique_ptr<Packet> packet;
-  webrtc::MutexLock lock(&mutex_);
+  MutexLock lock(&mutex_);
   if (!packets_.empty()) {
     packet = std::move(packets_.front());
     packets_.erase(packets_.begin());
@@ -106,7 +106,7 @@
 
 bool TestClient::CheckNextPacket(const char* buf,
                                  size_t size,
-                                 SocketAddress* addr) {
+                                 rtc::SocketAddress* addr) {
   bool res = false;
   std::unique_ptr<Packet> packet = NextPacket(kTimeoutMs);
   if (packet) {
@@ -119,8 +119,7 @@
   return res;
 }
 
-bool TestClient::CheckTimestamp(
-    std::optional<webrtc::Timestamp> packet_timestamp) {
+bool TestClient::CheckTimestamp(std::optional<Timestamp> packet_timestamp) {
   bool res = true;
   if (!packet_timestamp) {
     res = false;
@@ -142,7 +141,7 @@
       fake_clock_->AdvanceTime(webrtc ::TimeDelta ::Millis(1));
     };
   } else {
-    Thread::Current()->ProcessMessages(1);
+    rtc::Thread::Current()->ProcessMessages(1);
   }
 }
 
@@ -154,17 +153,17 @@
   return socket_->GetError();
 }
 
-int TestClient::SetOption(Socket::Option opt, int value) {
+int TestClient::SetOption(rtc::Socket::Option opt, int value) {
   return socket_->SetOption(opt, value);
 }
 
-void TestClient::OnPacket(AsyncPacketSocket* socket,
+void TestClient::OnPacket(rtc::AsyncPacketSocket* socket,
                           const rtc::ReceivedPacket& received_packet) {
-  webrtc::MutexLock lock(&mutex_);
+  MutexLock lock(&mutex_);
   packets_.push_back(std::make_unique<Packet>(received_packet));
 }
 
-void TestClient::OnReadyToSend(AsyncPacketSocket* socket) {
+void TestClient::OnReadyToSend(rtc::AsyncPacketSocket* socket) {
   ++ready_to_send_count_;
 }
 
@@ -179,4 +178,4 @@
       buf(p.buf.data(), p.buf.size()),
       packet_time(p.packet_time) {}
 
-}  // namespace rtc
+}  // namespace webrtc
diff --git a/rtc_base/test_client.h b/rtc_base/test_client.h
index 56c4b7b..1915c80 100644
--- a/rtc_base/test_client.h
+++ b/rtc_base/test_client.h
@@ -21,7 +21,7 @@
 #include "rtc_base/network/received_packet.h"
 #include "rtc_base/synchronization/mutex.h"
 
-namespace rtc {
+namespace webrtc {
 
 // A simple client that can send TCP or UDP data and check that it receives
 // what it expects to receive. Useful for testing server functionality.
@@ -32,9 +32,9 @@
     Packet(const rtc::ReceivedPacket& received_packet);
     Packet(const Packet& p);
 
-    SocketAddress addr;
+    rtc::SocketAddress addr;
     Buffer buf;
-    std::optional<webrtc::Timestamp> packet_time;
+    std::optional<Timestamp> packet_time;
   };
 
   // Default timeout for NextPacket reads.
@@ -42,33 +42,35 @@
 
   // Creates a client that will send and receive with the given socket and
   // will post itself messages with the given thread.
-  explicit TestClient(std::unique_ptr<AsyncPacketSocket> socket);
+  explicit TestClient(std::unique_ptr<rtc::AsyncPacketSocket> socket);
   // Create a test client that will use a fake clock. NextPacket needs to wait
   // for a packet to be received, and thus it needs to advance the fake clock
   // if the test is using one, rather than just sleeping.
-  TestClient(std::unique_ptr<AsyncPacketSocket> socket,
-             ThreadProcessingFakeClock* fake_clock);
+  TestClient(std::unique_ptr<rtc::AsyncPacketSocket> socket,
+             rtc::ThreadProcessingFakeClock* fake_clock);
   ~TestClient() override;
 
   TestClient(const TestClient&) = delete;
   TestClient& operator=(const TestClient&) = delete;
 
-  SocketAddress address() const { return socket_->GetLocalAddress(); }
-  SocketAddress remote_address() const { return socket_->GetRemoteAddress(); }
+  rtc::SocketAddress address() const { return socket_->GetLocalAddress(); }
+  rtc::SocketAddress remote_address() const {
+    return socket_->GetRemoteAddress();
+  }
 
   // Checks that the socket moves to the specified connect state.
-  bool CheckConnState(AsyncPacketSocket::State state);
+  bool CheckConnState(rtc::AsyncPacketSocket::State state);
 
   // Checks that the socket is connected to the remote side.
   bool CheckConnected() {
-    return CheckConnState(AsyncPacketSocket::STATE_CONNECTED);
+    return CheckConnState(rtc::AsyncPacketSocket::STATE_CONNECTED);
   }
 
   // Sends using the clients socket.
   int Send(const char* buf, size_t size);
 
   // Sends using the clients socket to the given destination.
-  int SendTo(const char* buf, size_t size, const SocketAddress& dest);
+  int SendTo(const char* buf, size_t size, const rtc::SocketAddress& dest);
 
   // Returns the next packet received by the client or null if none is received
   // within the specified timeout.
@@ -76,13 +78,13 @@
 
   // Checks that the next packet has the given contents. Returns the remote
   // address that the packet was sent from.
-  bool CheckNextPacket(const char* buf, size_t len, SocketAddress* addr);
+  bool CheckNextPacket(const char* buf, size_t len, rtc::SocketAddress* addr);
 
   // Checks that no packets have arrived or will arrive in the next second.
   bool CheckNoPacket();
 
   int GetError();
-  int SetOption(Socket::Option opt, int value);
+  int SetOption(rtc::Socket::Option opt, int value);
 
   bool ready_to_send() const { return ready_to_send_count() > 0; }
 
@@ -93,22 +95,28 @@
   // Timeout for reads when no packet is expected.
   static const int kNoPacketTimeoutMs = 1000;
   // Workaround for the fact that AsyncPacketSocket::GetConnState doesn't exist.
-  Socket::ConnState GetState();
+  rtc::Socket::ConnState GetState();
 
-  void OnPacket(AsyncPacketSocket* socket,
+  void OnPacket(rtc::AsyncPacketSocket* socket,
                 const rtc::ReceivedPacket& received_packet);
-  void OnReadyToSend(AsyncPacketSocket* socket);
-  bool CheckTimestamp(std::optional<webrtc::Timestamp> packet_timestamp);
+  void OnReadyToSend(rtc::AsyncPacketSocket* socket);
+  bool CheckTimestamp(std::optional<Timestamp> packet_timestamp);
   void AdvanceTime(int ms);
 
-  ThreadProcessingFakeClock* fake_clock_ = nullptr;
-  webrtc::Mutex mutex_;
-  std::unique_ptr<AsyncPacketSocket> socket_;
+  rtc::ThreadProcessingFakeClock* fake_clock_ = nullptr;
+  Mutex mutex_;
+  std::unique_ptr<rtc::AsyncPacketSocket> socket_;
   std::vector<std::unique_ptr<Packet>> packets_;
   int ready_to_send_count_ = 0;
-  std::optional<webrtc::Timestamp> prev_packet_timestamp_;
+  std::optional<Timestamp> prev_packet_timestamp_;
 };
 
+}  //  namespace webrtc
+
+// Re-export symbols from the webrtc namespace for backwards compatibility.
+// TODO(bugs.webrtc.org/4222596): Remove once all references are updated.
+namespace rtc {
+using ::webrtc::TestClient;
 }  // namespace rtc
 
 #endif  // RTC_BASE_TEST_CLIENT_H_
diff --git a/rtc_base/test_client_unittest.cc b/rtc_base/test_client_unittest.cc
index 3bb79fc..3b3a8e0 100644
--- a/rtc_base/test_client_unittest.cc
+++ b/rtc_base/test_client_unittest.cc
@@ -24,47 +24,49 @@
 #include "rtc_base/thread.h"
 #include "test/gtest.h"
 
-namespace rtc {
-namespace {
-
 #define MAYBE_SKIP_IPV4                        \
-  if (!HasIPv4Enabled()) {                     \
+  if (!::rtc::HasIPv4Enabled()) {              \
     RTC_LOG(LS_INFO) << "No IPv4... skipping"; \
     return;                                    \
   }
 
 #define MAYBE_SKIP_IPV6                        \
-  if (!HasIPv6Enabled()) {                     \
+  if (!::rtc::HasIPv6Enabled()) {              \
     RTC_LOG(LS_INFO) << "No IPv6... skipping"; \
     return;                                    \
   }
 
-void TestUdpInternal(const SocketAddress& loopback) {
+namespace webrtc {
+namespace {
+
+void TestUdpInternal(const rtc::SocketAddress& loopback) {
   rtc::PhysicalSocketServer socket_server;
   rtc::AutoSocketServerThread main_thread(&socket_server);
-  Socket* socket = socket_server.CreateSocket(loopback.family(), SOCK_DGRAM);
+  rtc::Socket* socket =
+      socket_server.CreateSocket(loopback.family(), SOCK_DGRAM);
   socket->Bind(loopback);
 
-  TestClient client(std::make_unique<AsyncUDPSocket>(socket));
-  SocketAddress addr = client.address(), from;
+  TestClient client(std::make_unique<rtc::AsyncUDPSocket>(socket));
+  rtc::SocketAddress addr = client.address(), from;
   EXPECT_EQ(3, client.SendTo("foo", 3, addr));
   EXPECT_TRUE(client.CheckNextPacket("foo", 3, &from));
   EXPECT_EQ(from, addr);
   EXPECT_TRUE(client.CheckNoPacket());
 }
 
-void TestTcpInternal(const SocketAddress& loopback) {
+void TestTcpInternal(const rtc::SocketAddress& loopback) {
   rtc::PhysicalSocketServer socket_server;
   rtc::AutoSocketServerThread main_thread(&socket_server);
   webrtc::TestEchoServer server(&main_thread, loopback);
 
-  Socket* socket = socket_server.CreateSocket(loopback.family(), SOCK_STREAM);
-  std::unique_ptr<AsyncTCPSocket> tcp_socket = absl::WrapUnique(
-      AsyncTCPSocket::Create(socket, loopback, server.address()));
+  rtc::Socket* socket =
+      socket_server.CreateSocket(loopback.family(), SOCK_STREAM);
+  std::unique_ptr<rtc::AsyncTCPSocket> tcp_socket = absl::WrapUnique(
+      rtc::AsyncTCPSocket::Create(socket, loopback, server.address()));
   ASSERT_TRUE(tcp_socket != nullptr);
 
   TestClient client(std::move(tcp_socket));
-  SocketAddress addr = client.address(), from;
+  rtc::SocketAddress addr = client.address(), from;
   EXPECT_TRUE(client.CheckConnected());
   EXPECT_EQ(3, client.Send("foo", 3));
   EXPECT_TRUE(client.CheckNextPacket("foo", 3, &from));
@@ -75,7 +77,7 @@
 // Tests whether the TestClient can send UDP to itself.
 TEST(TestClientTest, TestUdpIPv4) {
   MAYBE_SKIP_IPV4;
-  TestUdpInternal(SocketAddress("127.0.0.1", 0));
+  TestUdpInternal(rtc::SocketAddress("127.0.0.1", 0));
 }
 
 #if defined(WEBRTC_LINUX)
@@ -85,13 +87,13 @@
 #endif
 TEST(TestClientTest, MAYBE_TestUdpIPv6) {
   MAYBE_SKIP_IPV6;
-  TestUdpInternal(SocketAddress("::1", 0));
+  TestUdpInternal(rtc::SocketAddress("::1", 0));
 }
 
 // Tests whether the TestClient can connect to a server and exchange data.
 TEST(TestClientTest, TestTcpIPv4) {
   MAYBE_SKIP_IPV4;
-  TestTcpInternal(SocketAddress("127.0.0.1", 0));
+  TestTcpInternal(rtc::SocketAddress("127.0.0.1", 0));
 }
 
 #if defined(WEBRTC_LINUX)
@@ -101,8 +103,8 @@
 #endif
 TEST(TestClientTest, MAYBE_TestTcpIPv6) {
   MAYBE_SKIP_IPV6;
-  TestTcpInternal(SocketAddress("::1", 0));
+  TestTcpInternal(rtc::SocketAddress("::1", 0));
 }
 
 }  // namespace
-}  // namespace rtc
+}  // namespace webrtc
diff --git a/rtc_base/virtual_socket_unittest.cc b/rtc_base/virtual_socket_unittest.cc
index 13e267e..8c43b57 100644
--- a/rtc_base/virtual_socket_unittest.cc
+++ b/rtc_base/virtual_socket_unittest.cc
@@ -183,7 +183,7 @@
     socket->Bind(EmptySocketAddressWithFamily(default_address.family()));
     SocketAddress client1_any_addr = socket->GetLocalAddress();
     EXPECT_TRUE(client1_any_addr.IsAnyIP());
-    auto client1 = std::make_unique<TestClient>(
+    auto client1 = std::make_unique<webrtc::TestClient>(
         std::make_unique<AsyncUDPSocket>(socket), &fake_clock_);
 
     // Create client2 bound to the address route.
@@ -191,7 +191,7 @@
     socket2->Bind(SocketAddress(default_address, 0));
     SocketAddress client2_addr = socket2->GetLocalAddress();
     EXPECT_FALSE(client2_addr.IsAnyIP());
-    auto client2 = std::make_unique<TestClient>(
+    auto client2 = std::make_unique<webrtc::TestClient>(
         std::make_unique<AsyncUDPSocket>(socket2), &fake_clock_);
 
     // Client1 sends to client2, client2 should see the default address as
@@ -214,10 +214,10 @@
     // Make sure VSS didn't switch families on us.
     EXPECT_EQ(server_addr.family(), initial_addr.family());
 
-    auto client1 = std::make_unique<TestClient>(
+    auto client1 = std::make_unique<webrtc::TestClient>(
         std::make_unique<AsyncUDPSocket>(socket), &fake_clock_);
     Socket* socket2 = ss_.CreateSocket(initial_addr.family(), SOCK_DGRAM);
-    auto client2 = std::make_unique<TestClient>(
+    auto client2 = std::make_unique<webrtc::TestClient>(
         std::make_unique<AsyncUDPSocket>(socket2), &fake_clock_);
 
     SocketAddress client2_addr;
@@ -231,7 +231,7 @@
 
     SocketAddress empty = EmptySocketAddressWithFamily(initial_addr.family());
     for (int i = 0; i < 10; i++) {
-      client2 = std::make_unique<TestClient>(
+      client2 = std::make_unique<webrtc::TestClient>(
           absl::WrapUnique(AsyncUDPSocket::Create(&ss_, empty)), &fake_clock_);
 
       SocketAddress next_client2_addr;
@@ -814,12 +814,12 @@
     Socket* socket = ss_.CreateSocket(AF_INET, SOCK_DGRAM);
     socket->Bind(server_addr);
     SocketAddress bound_server_addr = socket->GetLocalAddress();
-    auto client1 = std::make_unique<TestClient>(
+    auto client1 = std::make_unique<webrtc::TestClient>(
         std::make_unique<AsyncUDPSocket>(socket), &fake_clock_);
 
     Socket* socket2 = ss_.CreateSocket(AF_INET, SOCK_DGRAM);
     socket2->Bind(client_addr);
-    auto client2 = std::make_unique<TestClient>(
+    auto client2 = std::make_unique<webrtc::TestClient>(
         std::make_unique<AsyncUDPSocket>(socket2), &fake_clock_);
     SocketAddress client2_addr;
 
@@ -1024,7 +1024,7 @@
       absl::WrapUnique(ss_.CreateSocket(kIPv4AnyAddress.family(), SOCK_DGRAM));
   socket1->Bind(kIPv4AnyAddress);
   socket2->Bind(kIPv4AnyAddress);
-  auto client1 = std::make_unique<TestClient>(
+  auto client1 = std::make_unique<webrtc::TestClient>(
       std::make_unique<AsyncUDPSocket>(socket1), &fake_clock_);
 
   ss_.SetSendingBlocked(true);