NULL -> nullptr under athena/

athena/content/content_proxy.h

 // Copyright 2014 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.
 
 #ifndef ATHENA_CONTENT_CONTENT_PROXY_H_
 #define ATHENA_CONTENT_CONTENT_PROXY_H_
 
 #include "base/macros.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 59 matching lines @@
   bool CreateContentImage();
 
   // Called once the content was read back.
   void OnContentImageRead(bool success, const SkBitmap& bitmap);
 
   // Called once the image content has been converted to PNG.
   void OnContentImageEncodeComplete(scoped_refptr<ProxyImageData> image);
 
   // The web view which was passed on creation and is associated with this
   // object. It will be shown when OnPreContentDestroyed() gets called and then
-  // set to NULL. The ownership remains with the creator.
+  // set to nullptr. The ownership remains with the creator.
   views::WebView* web_view_;
 
   // While we are doing our PNG encode, we keep the read back image to have
   // something which we can pass back to the overview mode. (It would make no
   // sense to the user to see that more recent windows get painted later than
   // older ones).
   gfx::ImageSkia raw_image_;
 
   // True if the content is visible.
   bool content_visible_;
@@ skipping 13 matching lines @@
   // weakptr for the callback to make sure that the read back / encoding image
   // completion callback does not trigger on a destroyed ContentProxy.
   base::WeakPtrFactory<ContentProxy> proxy_content_to_image_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentProxy);
 };
 
 }  // namespace athena
 
 #endif  // ATHENA_CONTENT_CONTENT_PROXY_H_