C++11 declares a type safe null pointer

content/common/plugin_list_unittest.cc

 // Copyright (c) 2012 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 "content/common/plugin_list.h"
 
 #include "base/strings/string16.h"
 #include "base/strings/utf_string_conversions.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "url/gurl.h"
@@ skipping 80 matching lines @@
   GURL target_url(kTargetUrl);
   std::vector<WebPluginInfo> plugins;
   std::vector<std::string> actual_mime_types;
 
   // The file type of the URL is supported by foo_plugin_. However,
   // GetPluginInfoArray should not match foo_plugin_ because the MIME type is
   // application/octet-stream.
   plugin_list_.GetPluginInfoArray(target_url,
                                   "application/octet-stream",
                                   false, // allow_wildcard
-                                  NULL,  // use_stale
+                                  nullptr,  // use_stale
                                   false, // include_npapi
                                   &plugins,
                                   &actual_mime_types);
   EXPECT_EQ(0u, plugins.size());
   EXPECT_EQ(0u, actual_mime_types.size());
 
   // foo_plugin_ matches due to the MIME type.
   plugins.clear();
   actual_mime_types.clear();
   plugin_list_.GetPluginInfoArray(target_url,
                                   kFooMimeType,
                                   false, // allow_wildcard
-                                  NULL,  // use_stale
+                                  nullptr,  // use_stale
                                   false, // include_npapi
                                   &plugins,
                                   &actual_mime_types);
   EXPECT_EQ(1u, plugins.size());
   EXPECT_TRUE(Contains(plugins, foo_plugin_));
   ASSERT_EQ(1u, actual_mime_types.size());
   EXPECT_EQ(kFooMimeType, actual_mime_types.front());
 
   // foo_plugin_ matches due to the file type and empty MIME type.
   plugins.clear();
   actual_mime_types.clear();
   plugin_list_.GetPluginInfoArray(target_url,
                                   "",
                                   false, // allow_wildcard
-                                  NULL,  // use_stale
+                                  nullptr,  // use_stale
                                   false, // include_npapi
                                   &plugins,
                                   &actual_mime_types);
   EXPECT_EQ(1u, plugins.size());
   EXPECT_TRUE(Contains(plugins, foo_plugin_));
   ASSERT_EQ(1u, actual_mime_types.size());
   EXPECT_EQ(kFooMimeType, actual_mime_types.front());
 }
 
 }  // namespace content