cc: Fix style for comments at the end of namespaces

cc/video_layer_impl.cc

 // Copyright 2011 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/video_layer_impl.h"
 
 #include "base/logging.h"
 #include "cc/io_surface_draw_quad.h"
@@ skipping 412 matching lines @@
     str->append(indentString(indent));
     str->append("video layer\n");
     LayerImpl::dumpLayerProperties(str, indent);
 }
 
 const char* VideoLayerImpl::layerTypeAsString() const
 {
     return "VideoLayer";
 }
 
-}
+}  // namespace cc