Remove unused methods in HTMLTokenizer

Source/core/html/parser/HTMLTokenizer.cpp

Index: Source/core/html/parser/HTMLTokenizer.cpp
diff --git a/Source/core/html/parser/HTMLTokenizer.cpp b/Source/core/html/parser/HTMLTokenizer.cpp
index 7fe2b4c06d9b62abbdd583284a592792c6172cf7..47b00b223c7a843dbc1adb1e6f832b9e59b8e9fa 100644
--- a/Source/core/html/parser/HTMLTokenizer.cpp
+++ b/Source/core/html/parser/HTMLTokenizer.cpp
@@ -124,37 +124,6 @@ void HTMLTokenizer::reset()
     m_additionalAllowedCharacter = '\0';
 }
 
-bool HTMLTokenizer::canCreateCheckpoint() const
-{
-    if (!m_appropriateEndTagName.isEmpty())
-        return false;
-    if (!m_temporaryBuffer.isEmpty())
-        return false;
-    if (!m_bufferedEndTagName.isEmpty())
-        return false;
-    return true;
-}
-
-void HTMLTokenizer::createCheckpoint(Checkpoint& result) const
-{
-    ASSERT(canCreateCheckpoint());
-    result.options = m_options;
-    result.state = m_state;
-    result.additionalAllowedCharacter = m_additionalAllowedCharacter;
-    result.skipNextNewLine = m_inputStreamPreprocessor.skipNextNewLine();
-    result.shouldAllowCDATA = m_shouldAllowCDATA;
-}
-
-void HTMLTokenizer::restoreFromCheckpoint(const Checkpoint& checkpoint)
-{
-    m_token = 0;
-    m_options = checkpoint.options;
-    m_state = checkpoint.state;
-    m_additionalAllowedCharacter = checkpoint.additionalAllowedCharacter;
-    m_inputStreamPreprocessor.reset(checkpoint.skipNextNewLine);
-    m_shouldAllowCDATA = checkpoint.shouldAllowCDATA;
-}
-
 inline bool HTMLTokenizer::processEntity(SegmentedString& source)
 {
     bool notEnoughCharacters = false;