Don't read socket timestamps when building native client.

webrtc/base/physicalsocketserver.cc

Index: webrtc/base/physicalsocketserver.cc
diff --git a/webrtc/base/physicalsocketserver.cc b/webrtc/base/physicalsocketserver.cc
index f28b1f5686a0da0b31a5a90ff6b582d6121bb75c..c94b9a3dedcbc9a99ad280dc480297a0cc245e0f 100644
--- a/webrtc/base/physicalsocketserver.cc
+++ b/webrtc/base/physicalsocketserver.cc
@@ -59,7 +59,8 @@ typedef void* SockOptArg;
 
 #endif  // WEBRTC_POSIX
 
-#if defined(WEBRTC_POSIX) && !defined(WEBRTC_MAC)
+#if defined(WEBRTC_POSIX) && !defined(WEBRTC_MAC) && !defined(__native_client__)
+
 int64_t GetSocketRecvTimestamp(int socket) {
   struct timeval tv_ioctl;
   int ret = ioctl(socket, SIOCGSTAMP, &tv_ioctl);