libcef: Convert NULL to nullptr (see issue #2861)

libcef/browser/native/browser_platform_delegate_native_linux.cc

@@ -382,7 +382,7 @@ void CefBrowserPlatformDelegateNativeLinux::TranslateWheelEvent(
 CefEventHandle CefBrowserPlatformDelegateNativeLinux::GetEventHandle(
     const content::NativeWebKeyboardEvent& event) const {
   if (!event.os_event)
-    return NULL;
+    return nullptr;
   return const_cast<CefEventHandle>(
       static_cast<CefEventHandle>(event.os_event->native_event()));
 }

libcef/browser/native/menu_2.cc

@@ -32,7 +32,7 @@ void Menu2::CancelMenu() {
 }
 
 void Menu2::Rebuild() {
-  wrapper_->Rebuild(NULL);
+  wrapper_->Rebuild(nullptr);
 }
 
 void Menu2::UpdateStates() {

libcef/browser/native/menu_runner_linux.cc

@@ -26,7 +26,7 @@ bool CefMenuRunnerLinux::RunContextMenu(
   if (!browser->IsWindowless())
     parent_widget = browser->GetWindowWidget();
 
-  menu_->RunMenuAt(parent_widget, NULL, gfx::Rect(screen_point, gfx::Size()),
+  menu_->RunMenuAt(parent_widget, nullptr, gfx::Rect(screen_point, gfx::Size()),
                    views::MenuAnchorPosition::kTopRight, ui::MENU_SOURCE_NONE);
 
   return true;

libcef/browser/native/menu_runner_win.cc

@@ -18,8 +18,8 @@ bool CefMenuRunnerWin::RunContextMenu(
     CefMenuModelImpl* model,
     const content::ContextMenuParams& params) {
   // Create a menu based on the model.
-  menu_.reset(new views::CefNativeMenuWin(model->model(), NULL));
-  menu_->Rebuild(NULL);
+  menu_.reset(new views::CefNativeMenuWin(model->model(), nullptr));
+  menu_->Rebuild(nullptr);
 
   // Make sure events can be pumped while the menu is up.
   base::MessageLoopCurrent::ScopedNestableTaskAllower allow;

libcef/browser/native/native_menu_win.cc

@@ -401,7 +401,7 @@ class CefNativeMenuWin::MenuHostWindow {
 
 struct CefNativeMenuWin::HighlightedMenuItemInfo {
   HighlightedMenuItemInfo()
-      : has_parent(false), has_submenu(false), menu(NULL), position(-1) {}
+      : has_parent(false), has_submenu(false), menu(nullptr), position(-1) {}
 
   bool has_parent;
   bool has_submenu;
@@ -420,16 +420,16 @@ const wchar_t* CefNativeMenuWin::MenuHostWindow::kWindowClassName =
 
 CefNativeMenuWin::CefNativeMenuWin(ui::MenuModel* model, HWND system_menu_for)
     : model_(model),
-      menu_(NULL),
+      menu_(nullptr),
       owner_draw_(l10n_util::NeedOverrideDefaultUIFont(NULL, NULL) &&
                   !system_menu_for),
       system_menu_for_(system_menu_for),
       first_item_index_(0),
       menu_action_(MENU_ACTION_NONE),
-      menu_to_select_(NULL),
+      menu_to_select_(nullptr),
       position_to_select_(-1),
-      parent_(NULL),
-      destroyed_flag_(NULL),
+      parent_(nullptr),
+      destroyed_flag_(nullptr),
       menu_to_select_factory_(this) {}
 
 CefNativeMenuWin::~CefNativeMenuWin() {
@@ -458,7 +458,7 @@ void CefNativeMenuWin::RunMenuAt(const gfx::Point& point, int alignment) {
 
   // Command dispatch is done through WM_MENUCOMMAND, handled by the host
   // window.
-  menu_to_select_ = NULL;
+  menu_to_select_ = nullptr;
   position_to_select_ = -1;
   menu_to_select_factory_.InvalidateWeakPtrs();
   bool destroyed = false;
@@ -467,10 +467,10 @@ void CefNativeMenuWin::RunMenuAt(const gfx::Point& point, int alignment) {
   TrackPopupMenu(menu_, flags, point.x(), point.y(), 0, host_window_->hwnd(),
                  NULL);
   UnhookWindowsHookEx(hhook);
-  open_native_menu_win_ = NULL;
+  open_native_menu_win_ = nullptr;
   if (destroyed)
     return;
-  destroyed_flag_ = NULL;
+  destroyed_flag_ = nullptr;
   if (menu_to_select_) {
     // Folks aren't too happy if we notify immediately. In particular, notifying
     // the delegate can cause destruction leaving the stack in a weird
@@ -542,7 +542,7 @@ void CefNativeMenuWin::SetMinimumWidth(int width) {
 // CefNativeMenuWin, private:
 
 // static
-CefNativeMenuWin* CefNativeMenuWin::open_native_menu_win_ = NULL;
+CefNativeMenuWin* CefNativeMenuWin::open_native_menu_win_ = nullptr;
 
 void CefNativeMenuWin::DelayedSelect() {
   if (menu_to_select_)

libcef/browser/native/window_delegate_view.cc

@@ -17,7 +17,7 @@ CefWindowDelegateView::CefWindowDelegateView(
     bool always_on_top,
     base::RepeatingClosure on_bounds_changed)
     : background_color_(background_color),
-      web_view_(NULL),
+      web_view_(nullptr),
       always_on_top_(always_on_top),
       on_bounds_changed_(on_bounds_changed) {}
 

libcef/browser/native/window_x11.cc

@@ -53,7 +53,7 @@ const char kUTF8String[] = "UTF8_STRING";
   ::Window top_level_window = window;
   ::Window root = x11::None;
   ::Window parent = x11::None;
-  ::Window* children = NULL;
+  ::Window* children = nullptr;
   unsigned int nchildren = 0;
   // Enumerate all parents of "window" to find the highest level window
   // that either:
@@ -77,7 +77,7 @@ const char kUTF8String[] = "UTF8_STRING";
 
 CEF_EXPORT XDisplay* cef_get_xdisplay() {
   if (!CEF_CURRENTLY_ON(CEF_UIT))
-    return NULL;
+    return nullptr;
   return gfx::GetXDisplay();
 }
 
@@ -280,7 +280,7 @@ views::DesktopWindowTreeHostX11* CefWindowX11::GetHost() {
           views::DesktopWindowTreeHostLinux::GetHostForWidget(child));
     }
   }
-  return NULL;
+  return nullptr;
 }
 
 bool CefWindowX11::CanDispatchEvent(const ui::PlatformEvent& event) {