cc: Fix style for comments at the end of namespaces

cc/image_layer.cc

 // Copyright 2010 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/image_layer.h"
 
 #include "base/compiler_specific.h"
 #include "cc/layer_updater.h"
@@ skipping 146 matching lines @@
     return static_cast<float>(m_bitmap.width()) / bounds().width();
 }
 
 float ImageLayer::contentsScaleY() const
 {
     if (bounds().IsEmpty() || contentBounds().IsEmpty())
         return 1;
     return static_cast<float>(m_bitmap.height()) / bounds().height();
 }
 
-}
+}  // namespace cc