Support the 'lrm', 'rlm' and 'nbsp' entities in the WebVTTTokenizer

Source/core/html/track/WebVTTTokenizer.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 "core/html/track/WebVTTTokenizer.h"
 
 #include "core/xml/parser/MarkupTokenizerInlines.h"
+#include "wtf/unicode/CharacterNames.h"
 
 namespace WebCore {
 
 #define WEBVTT_BEGIN_STATE(stateName) BEGIN_STATE(WebVTTTokenizerState, stateName)
 #define WEBVTT_ADVANCE_TO(stateName) ADVANCE_TO(WebVTTTokenizerState, stateName)
 
 WebVTTTokenizer::WebVTTTokenizer()
     : m_inputStreamPreprocessor(this)
 {
     reset();
@@ skipping 54 matching lines @@
     END_STATE()
 
     WEBVTT_BEGIN_STATE(EscapeState) {
         if (cc == ';') {
             if (vectorEqualsString(m_buffer, "&amp"))
                 bufferCharacter('&');
             else if (vectorEqualsString(m_buffer, "&lt"))
                 bufferCharacter('<');
             else if (vectorEqualsString(m_buffer, "&gt"))
                 bufferCharacter('>');
+            else if (vectorEqualsString(m_buffer, "&lrm"))
+                bufferCharacter(leftToRightMark);
+            else if (vectorEqualsString(m_buffer, "&rlm"))
+                bufferCharacter(rightToLeftMark);
+            else if (vectorEqualsString(m_buffer, "&nbsp"))
+                bufferCharacter(noBreakSpace);
             else {
                 m_buffer.append(static_cast<LChar>(cc));
                 m_token->appendToCharacter(m_buffer);
             }
             m_buffer.clear();
             WEBVTT_ADVANCE_TO(DataState);
         } else if (isASCIIAlphanumeric(cc)) {
             m_buffer.append(static_cast<LChar>(cc));
             WEBVTT_ADVANCE_TO(EscapeState);
         } else if (cc == kEndOfFileMarker) {
@@ skipping 99 matching lines @@
     END_STATE()
 
     }
 
     ASSERT_NOT_REACHED();
     return false;
 }
 
 }