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

content/browser/accessibility/accessibility_tree_formatter.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/browser/accessibility/accessibility_tree_formatter.h"
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
@@ skipping 17 matching lines @@
   Initialize();
 }
 
 // static
 AccessibilityTreeFormatter* AccessibilityTreeFormatter::Create(
     WebContents* web_contents) {
   BrowserAccessibilityManager* manager =
       static_cast<WebContentsImpl*>(web_contents)->
           GetRootBrowserAccessibilityManager();
   if (!manager)
-    return NULL;
+    return nullptr;
 
   BrowserAccessibility* root = manager->GetRoot();
   return new AccessibilityTreeFormatter(root);
 }
 
 
 AccessibilityTreeFormatter::~AccessibilityTreeFormatter() {
 }
 
 scoped_ptr<base::DictionaryValue>
@@ skipping 129 matching lines @@
   if (attr.empty())
     return;
   if (!MatchesFilters(attr, include_by_default))
     return;
   if (!line->empty())
     *line += base::ASCIIToUTF16(" ");
   *line += attr;
 }
 
 }  // namespace content