Read recv timestamps from socket (posix only).

webrtc/base/socket_unittest.h

Index: webrtc/base/socket_unittest.h
diff --git a/webrtc/base/socket_unittest.h b/webrtc/base/socket_unittest.h
index adc69f1465d5dfdc74f95a635f3f278b89aced45..5f38303ef47994cd5f4dda388ce71b3a0dbee6aa 100644
--- a/webrtc/base/socket_unittest.h
+++ b/webrtc/base/socket_unittest.h
@@ -52,7 +52,9 @@ class SocketTest : public testing::Test {
   void TestSingleFlowControlCallbackIPv4();
   void TestSingleFlowControlCallbackIPv6();
   void TestUdpIPv4();
+  void TestUdpIpv4Interval();
   void TestUdpIPv6();
+  void TestUdpIpv6Interval();
   void TestUdpReadyToSendIPv4();
   void TestUdpReadyToSendIPv6();
   void TestGetSetOptionsIPv4();
@@ -82,6 +84,7 @@ class SocketTest : public testing::Test {
   void SocketServerWaitInternal(const IPAddress& loopback);
   void SingleFlowControlCallbackInternal(const IPAddress& loopback);
   void UdpInternal(const IPAddress& loopback);
+  void SendUdpInterval(const IPAddress& loopback, int64_t time_interval_ms);
   void UdpReadyToSend(const IPAddress& loopback);
   void GetSetOptionsInternal(const IPAddress& loopback);