[C++11 Allowed Features] Declares a type-safe null pointer converting from NULL to nullptr

content/browser/accessibility/accessibility_ui.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 "content/browser/accessibility/accessibility_ui.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/json/json_writer.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 60 matching lines @@
   std::string title;
   GURL url;
   GURL favicon_url;
   if (web_contents) {
     // TODO(nasko): Fix the following code to use a consistent set of data
     // across the URL, title, and favicon.
     url = web_contents->GetURL();
     title = base::UTF16ToUTF8(web_contents->GetTitle());
     NavigationController& controller = web_contents->GetController();
     NavigationEntry* entry = controller.GetVisibleEntry();
-    if (entry != NULL && entry->GetURL().is_valid())
+    if (entry != nullptr && entry->GetURL().is_valid())
       favicon_url = entry->GetFavicon().url;
   }
 
   return BuildTargetDescriptor(url,
                                title,
                                favicon_url,
                                rvh->GetProcess()->GetID(),
                                rvh->GetRoutingID(),
                                accessibility_mode);
 }
@@ skipping 140 matching lines @@
   formatter->SetFilters(filters);
   formatter->FormatAccessibilityTree(&accessibility_contents_utf16);
 
   result->Set("tree",
               new base::StringValue(
                   base::UTF16ToUTF8(accessibility_contents_utf16)));
   web_ui()->CallJavascriptFunction("accessibility.showTree", *(result.get()));
 }
 
 }  // namespace content