Modernize to C++11: NULL => nullptr.

No functional change.

atom/browser/api/atom_api_menu.cc

@@ -21,7 +21,7 @@ namespace api {
 
 Menu::Menu(v8::Isolate* isolate)
     : model_(new AtomMenuModel(this)),
-      parent_(NULL) {
+      parent_(nullptr) {
 }
 
 Menu::~Menu() {

atom/browser/api/event.cc

@@ -12,8 +12,8 @@
 namespace mate {
 
 Event::Event(v8::Isolate* isolate)
-    : sender_(NULL),
-      message_(NULL) {
+    : sender_(nullptr),
+      message_(nullptr) {
   Init(isolate);
 }
 
@@ -31,8 +31,8 @@ void Event::SetSenderAndMessage(content::WebContents* sender,
 }
 
 void Event::WebContentsDestroyed() {
-  sender_ = NULL;
-  message_ = NULL;
+  sender_ = nullptr;
+  message_ = nullptr;
 }
 
 void Event::PreventDefault(v8::Isolate* isolate) {
@@ -41,13 +41,13 @@ void Event::PreventDefault(v8::Isolate* isolate) {
 }
 
 bool Event::SendReply(const base::string16& json) {
-  if (message_ == NULL || sender_ == NULL)
+  if (message_ == nullptr || sender_ == nullptr)
     return false;
 
   AtomViewHostMsg_Message_Sync::WriteReplyParams(message_, json);
   bool success = sender_->Send(message_);
-  message_ = NULL;
-  sender_ = NULL;
+  message_ = nullptr;
+  sender_ = nullptr;
   return success;
 }
 

atom/browser/atom_browser_main_parts.cc

@@ -32,7 +32,7 @@ void Erase(T* container, typename T::iterator iter) {
 }
 
 // static
-AtomBrowserMainParts* AtomBrowserMainParts::self_ = NULL;
+AtomBrowserMainParts* AtomBrowserMainParts::self_ = nullptr;
 
 AtomBrowserMainParts::AtomBrowserMainParts()
     : fake_browser_process_(new BrowserProcess),

atom/browser/atom_browser_main_parts_posix.cc

@@ -43,7 +43,7 @@ void GracefulShutdownHandler(int signal) {
   struct sigaction action;
   memset(&action, 0, sizeof(action));
   action.sa_handler = SIG_DFL;
-  RAW_CHECK(sigaction(signal, &action, NULL) == 0);
+  RAW_CHECK(sigaction(signal, &action, nullptr) == 0);
 
   RAW_CHECK(g_pipe_pid == getpid());
   RAW_CHECK(g_shutdown_pipe_write_fd != -1);
@@ -171,7 +171,7 @@ void AtomBrowserMainParts::HandleSIGCHLD() {
   struct sigaction action;
   memset(&action, 0, sizeof(action));
   action.sa_handler = SIGCHLDHandler;
-  CHECK_EQ(sigaction(SIGCHLD, &action, NULL), 0);
+  CHECK_EQ(sigaction(SIGCHLD, &action, nullptr), 0);
 }
 
 void AtomBrowserMainParts::HandleShutdownSignals() {
@@ -211,15 +211,15 @@ void AtomBrowserMainParts::HandleShutdownSignals() {
   struct sigaction action;
   memset(&action, 0, sizeof(action));
   action.sa_handler = SIGTERMHandler;
-  CHECK_EQ(sigaction(SIGTERM, &action, NULL), 0);
+  CHECK_EQ(sigaction(SIGTERM, &action, nullptr), 0);
   // Also handle SIGINT - when the user terminates the browser via Ctrl+C. If
   // the browser process is being debugged, GDB will catch the SIGINT first.
   action.sa_handler = SIGINTHandler;
-  CHECK_EQ(sigaction(SIGINT, &action, NULL), 0);
+  CHECK_EQ(sigaction(SIGINT, &action, nullptr), 0);
   // And SIGHUP, for when the terminal disappears. On shutdown, many Linux
   // distros send SIGHUP, SIGTERM, and then SIGKILL.
   action.sa_handler = SIGHUPHandler;
-  CHECK_EQ(sigaction(SIGHUP, &action, NULL), 0);
+  CHECK_EQ(sigaction(SIGHUP, &action, nullptr), 0);
 }
 
 }  // namespace atom

atom/browser/net/asar/url_request_asar_job.cc

@@ -183,7 +183,7 @@ bool URLRequestAsarJob::IsRedirectResponse(GURL* location,
 net::Filter* URLRequestAsarJob::SetupFilter() const {
   // Bug 9936 - .svgz files needs to be decompressed.
   return base::LowerCaseEqualsASCII(file_path_.Extension(), ".svgz")
-      ? net::Filter::GZipFactory() : NULL;
+      ? net::Filter::GZipFactory() : nullptr;
 }
 
 bool URLRequestAsarJob::GetMimeType(std::string* mime_type) const {
@@ -338,7 +338,7 @@ void URLRequestAsarJob::DidRead(scoped_refptr<net::IOBuffer> buf, int result) {
     DCHECK_GE(remaining_bytes_, 0);
   }
 
-  buf = NULL;
+  buf = nullptr;
 
   ReadRawDataComplete(result);
 }

atom/browser/relauncher_mac.cc

@@ -43,7 +43,7 @@ void RelauncherSynchronizeWithParent() {
 
   struct kevent change = { 0 };
   EV_SET(&change, parent_pid, EVFILT_PROC, EV_ADD, NOTE_EXIT, 0, NULL);
-  if (kevent(kq.get(), &change, 1, NULL, 0, NULL) == -1) {
+  if (kevent(kq.get(), &change, 1, nullptr, 0, nullptr) == -1) {
     PLOG(ERROR) << "kevent (add)";
     return;
   }
@@ -58,7 +58,7 @@ void RelauncherSynchronizeWithParent() {
   // write above to complete. The parent process is now free to exit. Wait for
   // that to happen.
   struct kevent event;
-  int events = kevent(kq.get(), NULL, 0, &event, 1, NULL);
+  int events = kevent(kq.get(), nullptr, 0, &event, 1, nullptr);
   if (events != 1) {
     if (events < 0) {
       PLOG(ERROR) << "kevent (monitor)";

atom/browser/window_list.cc

@@ -17,7 +17,7 @@ base::LazyInstance<base::ObserverList<WindowListObserver>>::Leaky
     WindowList::observers_ = LAZY_INSTANCE_INITIALIZER;
 
 // static
-WindowList* WindowList::instance_ = NULL;
+WindowList* WindowList::instance_ = nullptr;
 
 // static
 WindowList* WindowList::GetInstance() {