Replace NULL with nullptr in all C++ files.

webrtc/examples/peerconnection/client/linux/main.cc

Index: webrtc/examples/peerconnection/client/linux/main.cc
diff --git a/webrtc/examples/peerconnection/client/linux/main.cc b/webrtc/examples/peerconnection/client/linux/main.cc
index 2982c287f12beb4ee61072820fa1e825d588b9a2..9dd09d215883ca5f741c399991ce54bd9a1b022e 100644
--- a/webrtc/examples/peerconnection/client/linux/main.cc
+++ b/webrtc/examples/peerconnection/client/linux/main.cc
@@ -21,7 +21,7 @@
 class CustomSocketServer : public rtc::PhysicalSocketServer {
  public:
   CustomSocketServer(rtc::Thread* thread, GtkMainWnd* wnd)
-      : thread_(thread), wnd_(wnd), conductor_(NULL), client_(NULL) {}
+      : thread_(thread), wnd_(wnd), conductor_(nullptr), client_(nullptr) {}
   virtual ~CustomSocketServer() {}
 
   void set_client(PeerConnectionClient* client) { client_ = client; }
@@ -37,9 +37,9 @@ class CustomSocketServer : public rtc::PhysicalSocketServer {
       while (gtk_events_pending())
         gtk_main_iteration();
 
-    if (!wnd_->IsWindow() && !conductor_->connection_active() &&
-        client_ != NULL && !client_->is_connected()) {
-      thread_->Quit();
+      if (!wnd_->IsWindow() && !conductor_->connection_active() &&
+          client_ != nullptr && !client_->is_connected()) {
+        thread_->Quit();
     }
     return rtc::PhysicalSocketServer::Wait(0/*cms == -1 ? 1 : cms*/,
                                                  process_io);
@@ -62,12 +62,12 @@ int main(int argc, char* argv[]) {
   // g_thread_init API is deprecated since glib 2.31.0, see release note:
   // http://mail.gnome.org/archives/gnome-announce-list/2011-October/msg00041.html
 #if !GLIB_CHECK_VERSION(2, 31, 0)
-    g_thread_init(NULL);
+  g_thread_init(nullptr);
 #endif
 
   rtc::FlagList::SetFlagsFromCommandLine(&argc, argv, true);
   if (FLAG_help) {
-    rtc::FlagList::Print(NULL, false);
+    rtc::FlagList::Print(nullptr, false);
     return 0;
   }
 
@@ -99,7 +99,7 @@ int main(int argc, char* argv[]) {
   // gtk_main();
   wnd.Destroy();
 
-  thread->set_socketserver(NULL);
+  thread->set_socketserver(nullptr);
   // TODO(henrike): Run the Gtk main loop to tear down the connection.
   /*
   while (gtk_events_pending()) {