Replace NULL with nullptr in all C++ files.

webrtc/voice_engine/test/channel_transport/udp_socket_manager_posix.cc

Index: webrtc/voice_engine/test/channel_transport/udp_socket_manager_posix.cc
diff --git a/webrtc/voice_engine/test/channel_transport/udp_socket_manager_posix.cc b/webrtc/voice_engine/test/channel_transport/udp_socket_manager_posix.cc
index 6447e8bec1ff154015c699bf15acd0b01751a013..622b5186c9f5f0aae5aa0bcc92f76951c3eedcbf 100644
--- a/webrtc/voice_engine/test/channel_transport/udp_socket_manager_posix.cc
+++ b/webrtc/voice_engine/test/channel_transport/udp_socket_manager_posix.cc
@@ -196,21 +196,18 @@ UdpSocketManagerPosixImpl::UdpSocketManagerPosixImpl()
 
 UdpSocketManagerPosixImpl::~UdpSocketManagerPosixImpl()
 {
-    if (_critSectList != NULL)
-    {
-        UpdateSocketMap();
-
-        _critSectList->Enter();
-        for (std::map<SOCKET, UdpSocketPosix*>::iterator it =
-                 _socketMap.begin();
-             it != _socketMap.end();
-             ++it) {
-          delete it->second;
-        }
-        _socketMap.clear();
-        _critSectList->Leave();
+  if (_critSectList != nullptr) {
+    UpdateSocketMap();
+
+    _critSectList->Enter();
+    for (std::map<SOCKET, UdpSocketPosix*>::iterator it = _socketMap.begin();
+         it != _socketMap.end(); ++it) {
+      delete it->second;
+    }
+    _socketMap.clear();
+    _critSectList->Leave();
 
-        delete _critSectList;
+    delete _critSectList;
     }
 
     WEBRTC_TRACE(kTraceMemory,  kTraceTransport, -1,
@@ -259,13 +256,12 @@ bool UdpSocketManagerPosixImpl::Process()
     int num = 0;
     if (doSelect)
     {
-        num = select(maxFd+1, &_readFds, NULL, NULL, &timeout);
+      num = select(maxFd + 1, &_readFds, nullptr, nullptr, &timeout);
 
-        if (num == SOCKET_ERROR)
-        {
-            // Timeout = 10 ms.
-            SleepMs(10);
-            return true;
+      if (num == SOCKET_ERROR) {
+        // Timeout = 10 ms.
+        SleepMs(10);
+        return true;
         }
     }else
     {
@@ -343,21 +339,20 @@ void UdpSocketManagerPosixImpl::UpdateSocketMap()
     _critSectList->Enter();
     for (FdList::iterator iter = _removeList.begin();
          iter != _removeList.end(); ++iter) {
-        UdpSocketPosix* deleteSocket = NULL;
-        SOCKET removeFD = *iter;
-
-        // If the socket is in the add list it hasn't been added to the socket
-        // map yet. Just remove the socket from the add list.
-        for (SocketList::iterator iter = _addList.begin();
-             iter != _addList.end(); ++iter) {
-            UdpSocketPosix* addSocket = static_cast<UdpSocketPosix*>(*iter);
-            SOCKET addFD = addSocket->GetFd();
-            if(removeFD == addFD)
-            {
-                deleteSocket = addSocket;
-                _addList.erase(iter);
-                break;
-            }
+      UdpSocketPosix* deleteSocket = nullptr;
+      SOCKET removeFD = *iter;
+
+      // If the socket is in the add list it hasn't been added to the socket
+      // map yet. Just remove the socket from the add list.
+      for (SocketList::iterator iter = _addList.begin(); iter != _addList.end();
+           ++iter) {
+        UdpSocketPosix* addSocket = static_cast<UdpSocketPosix*>(*iter);
+        SOCKET addFD = addSocket->GetFd();
+        if (removeFD == addFD) {
+          deleteSocket = addSocket;
+          _addList.erase(iter);
+          break;
+        }
         }
 
         // Find and remove socket from _socketMap.