Add more missing closing namespace comments.

third_party/WebKit/Source/core/layout/svg/SVGTextChunkBuilder.cpp

 /*
  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 95 matching lines @@
             if (m_isVertical)
                 m_length += fragment.y - (lastFragment->y + lastFragment->height);
             else
                 m_length += fragment.x - (lastFragment->x + lastFragment->width);
 
             lastFragment = &fragment;
         }
     }
 }
 
-}
+} // namespace
 
 SVGTextChunkBuilder::SVGTextChunkBuilder()
 {
 }
 
 void SVGTextChunkBuilder::processTextChunks(const Vector<SVGInlineTextBox*>& lineLayoutBoxes)
 {
     if (lineLayoutBoxes.isEmpty())
         return;
 
@@ skipping 156 matching lines @@
 void SVGTextChunkBuilder::processTextAnchorCorrection(bool isVerticalText, float textAnchorShift, Vector<SVGTextFragment>& fragments)
 {
     for (SVGTextFragment& fragment : fragments) {
         if (isVerticalText)
             fragment.y += textAnchorShift;
         else
             fragment.x += textAnchorShift;
     }
 }
 
-}
+} // namespace blink