Cleanup namespace usage in Source/web/Web[I-Z]*.cpp

Source/web/WebTextCheckingResult.cpp

 /*
  * Copyright (C) 2011 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 "public/web/WebTextCheckingResult.h"
 
 #include "platform/text/TextCheckerClient.h"
 
-using namespace blink;
-
 namespace blink {
 
 WebTextCheckingResult::operator TextCheckingResult() const
 {
     TextCheckingResult result;
     result.decoration = static_cast<TextDecorationType>(decoration);
     result.location = location;
     result.length = length;
     result.replacement = replacement;
     result.hash = hash;
     if (result.decoration == TextDecorationTypeGrammar) {
         GrammarDetail detail;
         detail.location = 0;
         detail.length = length;
         detail.userDescription = replacement;
         result.details.append(detail);
     }
 
     return result;
 }
 
 } // namespace blink