cc: Fix style for comments at the end of namespaces

cc/heads_up_display_layer.cc

 // Copyright 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 "config.h"
 
 #include "cc/heads_up_display_layer.h"
 
 #include "base/debug/trace_event.h"
 #include "cc/heads_up_display_layer_impl.h"
@@ skipping 54 matching lines @@
 {
     Layer::pushPropertiesTo(layerImpl);
 
     if (!m_fontAtlas.get())
         return;
 
     HeadsUpDisplayLayerImpl* hudLayerImpl = static_cast<HeadsUpDisplayLayerImpl*>(layerImpl);
     hudLayerImpl->setFontAtlas(m_fontAtlas.Pass());
 }
 
-}
+}  // namespace cc