Gtk: Change NULL to nullptr

chrome/browser/ui/libgtkui/native_theme_gtk2.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/libgtkui/native_theme_gtk2.h"
 
 #include <gtk/gtk.h>
 
 #include "chrome/browser/ui/libgtkui/chrome_gtk_frame.h"
 #include "chrome/browser/ui/libgtkui/chrome_gtk_menu_subclasses.h"
@@ skipping 344 matching lines @@
 
     case kColorId_NumColors:
       NOTREACHED();
       break;
   }
 
   return kInvalidColorIdColor;
 }
 
 GtkWidget* NativeThemeGtk2::GetWindow() const {
-  static GtkWidget* fake_window = NULL;
+  static GtkWidget* fake_window = nullptr;
 
   if (!fake_window) {
     fake_window = chrome_gtk_frame_new();
     gtk_widget_realize(fake_window);
   }
 
   return fake_window;
 }
 
 GtkWidget* NativeThemeGtk2::GetEntry() const {
-  static GtkWidget* fake_entry = NULL;
+  static GtkWidget* fake_entry = nullptr;
 
   if (!fake_entry) {
     fake_entry = gtk_entry_new();
 
     // The fake entry needs to be in the window so it can be realized so we can
     // use the computed parts of the style.
     gtk_container_add(GTK_CONTAINER(GetWindow()), fake_entry);
     gtk_widget_realize(fake_entry);
   }
 
   return fake_entry;
 }
 
 GtkWidget* NativeThemeGtk2::GetLabel() const {
-  static GtkWidget* fake_label = NULL;
+  static GtkWidget* fake_label = nullptr;
 
   if (!fake_label)
     fake_label = gtk_label_new("");
 
   return fake_label;
 }
 
 GtkWidget* NativeThemeGtk2::GetButton() const {
-  static GtkWidget* fake_button = NULL;
+  static GtkWidget* fake_button = nullptr;
 
   if (!fake_button)
     fake_button = gtk_button_new();
 
   return fake_button;
 }
 
 GtkWidget* NativeThemeGtk2::GetBlueButton() const {
-  static GtkWidget* fake_bluebutton = NULL;
+  static GtkWidget* fake_bluebutton = nullptr;
 
   if (!fake_bluebutton) {
     fake_bluebutton = gtk_button_new();
     TurnButtonBlue(fake_bluebutton);
   }
 
   return fake_bluebutton;
 }
 
 GtkWidget* NativeThemeGtk2::GetTree() const {
-  static GtkWidget* fake_tree = NULL;
+  static GtkWidget* fake_tree = nullptr;
 
   if (!fake_tree)
     fake_tree = gtk_tree_view_new();
 
   return fake_tree;
 }
 
 GtkWidget* NativeThemeGtk2::GetTooltip() const {
-  static GtkWidget* fake_tooltip = NULL;
+  static GtkWidget* fake_tooltip = nullptr;
 
   if (!fake_tooltip) {
     fake_tooltip = gtk_window_new(GTK_WINDOW_TOPLEVEL);
     gtk_widget_set_name(fake_tooltip, "gtk-tooltip");
     gtk_widget_realize(fake_tooltip);
   }
 
   return fake_tooltip;
 }
 
 GtkWidget* NativeThemeGtk2::GetMenu() const {
-  static GtkWidget* fake_menu = NULL;
+  static GtkWidget* fake_menu = nullptr;
 
   if (!fake_menu)
     fake_menu = gtk_custom_menu_new();
 
   return fake_menu;
 }
 
 GtkWidget* NativeThemeGtk2::GetMenuItem() const {
-  static GtkWidget* fake_menu_item = NULL;
+  static GtkWidget* fake_menu_item = nullptr;
 
   if (!fake_menu_item) {
     fake_menu_item = gtk_custom_menu_item_new();
     gtk_menu_shell_append(GTK_MENU_SHELL(GetMenu()), fake_menu_item);
   }
 
   return fake_menu_item;
 }
 
 GtkWidget* NativeThemeGtk2::GetSeparator() const {
-  static GtkWidget* fake_separator = NULL;
+  static GtkWidget* fake_separator = nullptr;
 
   if (!fake_separator)
     fake_separator = gtk_hseparator_new();
 
   return fake_separator;
 }
 
 }  // namespace libgtkui