Remove "using namespace" statements from headers

Source/core/html/track/vtt/VTTParser.h

 /*
  * 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 26 matching lines @@
 #include "core/fetch/TextResourceDecoder.h"
 #include "core/html/track/vtt/BufferedLineReader.h"
 #include "core/html/track/vtt/VTTCue.h"
 #include "core/html/track/vtt/VTTRegion.h"
 #include "core/html/track/vtt/VTTTokenizer.h"
 #include "wtf/PassOwnPtr.h"
 #include "wtf/text/StringBuilder.h"
 
 namespace WebCore {
 
-using namespace HTMLNames;
-
 class Document;
 class VTTScanner;
 
 class VTTParserClient {
 public:
     virtual ~VTTParserClient() { }
 
     virtual void newCuesParsed() = 0;
     virtual void newRegionsParsed() = 0;
     virtual void fileFailedToParse() = 0;
@@ skipping 10 matching lines @@
         BadCue
     };
 
     static PassOwnPtr<VTTParser> create(VTTParserClient* client, Document& document)
     {
         return adoptPtr(new VTTParser(client, document));
     }
 
     static inline bool isRecognizedTag(const AtomicString& tagName)
     {
-        return tagName == iTag
-            || tagName == bTag
-            || tagName == uTag
-            || tagName == rubyTag
-            || tagName == rtTag;
+        return tagName == HTMLNames::iTag
+            || tagName == HTMLNames::bTag
+            || tagName == HTMLNames::uTag
+            || tagName == HTMLNames::rubyTag
+            || tagName == HTMLNames::rtTag;
     }
     static inline bool isASpace(UChar c)
     {
         // WebVTT space characters are U+0020 SPACE, U+0009 CHARACTER TABULATION (tab), U+000A LINE FEED (LF), U+000C FORM FEED (FF), and U+000D CARRIAGE RETURN    (CR).
         return c == ' ' || c == '\t' || c == '\n' || c == '\f' || c == '\r';
     }
     static inline bool isValidSettingDelimiter(UChar c)
     {
         // ... a WebVTT cue consists of zero or more of the following components, in any order, separated from each other by one or more
         // U+0020 SPACE characters or U+0009 CHARACTER TABULATION (tab) characters.
@@ skipping 52 matching lines @@
     VTTParserClient* m_client;
 
     Vector<RefPtr<VTTCue> > m_cuelist;
 
     Vector<RefPtr<VTTRegion> > m_regionList;
 };
 
 } // namespace WebCore
 
 #endif