Gtk: Change NULL to nullptr

chrome/browser/ui/libgtkui/unity_service.cc

 // Copyright 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/unity_service.h"
 
 #include <dlfcn.h>
 #include <gtk/gtk.h>
 
 #include <memory>
@@ skipping 20 matching lines @@
                                                        gdouble value);
 typedef void (*unity_launcher_entry_set_progress_visible_func)
     (UnityLauncherEntry* self, gboolean value);
 
 
 namespace {
 
 bool attempted_load = false;
 
 // Unity has a singleton object that we can ask whether the unity is running.
-UnityInspector* inspector = NULL;
+UnityInspector* inspector = nullptr;
 
 // A link to the desktop entry in the panel.
-UnityLauncherEntry* chrome_entry = NULL;
+UnityLauncherEntry* chrome_entry = nullptr;
 
 // Retrieved functions from libunity.
-unity_inspector_get_unity_running_func get_unity_running = NULL;
-unity_launcher_entry_set_count_func entry_set_count = NULL;
-unity_launcher_entry_set_count_visible_func entry_set_count_visible = NULL;
-unity_launcher_entry_set_progress_func entry_set_progress = NULL;
+unity_inspector_get_unity_running_func get_unity_running = nullptr;
+unity_launcher_entry_set_count_func entry_set_count = nullptr;
+unity_launcher_entry_set_count_visible_func entry_set_count_visible = nullptr;
+unity_launcher_entry_set_progress_func entry_set_progress = nullptr;
 unity_launcher_entry_set_progress_visible_func entry_set_progress_visible =
-    NULL;
+    nullptr;
 
 void EnsureMethodsLoaded() {
   using base::nix::GetDesktopEnvironment;
 
   if (attempted_load)
     return;
   attempted_load = true;
 
   std::unique_ptr<base::Environment> env(base::Environment::Create());
   base::nix::DesktopEnvironment desktop_env =
@@ skipping 74 matching lines @@
 void SetProgressFraction(float percentage) {
   EnsureMethodsLoaded();
   if (chrome_entry && entry_set_progress && entry_set_progress_visible) {
     entry_set_progress(chrome_entry, percentage);
     entry_set_progress_visible(chrome_entry,
                                percentage > 0.0 && percentage < 1.0);
   }
 }
 
 }  // namespace unity