Cleanup namespace usage in Source/web[A-V]*.cpp

Source/web/CompositionUnderlineVectorBuilder.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 15 matching lines @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "web/CompositionUnderlineVectorBuilder.h"
 
 #include "web/CompositionUnderlineBuilder.h"
 
-using namespace blink;
-
 namespace blink {
 
 CompositionUnderlineVectorBuilder::CompositionUnderlineVectorBuilder(
     const WebVector<WebCompositionUnderline>& underlines)
 {
     size_t size = underlines.size();
     reserveCapacity(size);
     for (size_t i = 0; i < size; ++i)
         append(CompositionUnderlineBuilder(underlines[i]));
 }
 
 } // namespace blink