Parse comments according to parsing.md

sky/engine/core/html/parser/HTMLToken.h

Index: sky/engine/core/html/parser/HTMLToken.h
diff --git a/sky/engine/core/html/parser/HTMLToken.h b/sky/engine/core/html/parser/HTMLToken.h
index 2934593421732cd916b1d0604b2e3689037d4f70..d716906bbf7247d908ec3b5ca2f32f7fde64a385 100644
--- a/sky/engine/core/html/parser/HTMLToken.h
+++ b/sky/engine/core/html/parser/HTMLToken.h
@@ -50,7 +50,6 @@ public:
         Uninitialized,
         StartTag,
         EndTag,
-        Comment,
         Character,
         EndOfFile,
     };
@@ -114,7 +113,7 @@ public:
 
     const DataVector& data() const
     {
-        ASSERT(m_type == Character || m_type == Comment || m_type == StartTag || m_type == EndTag);
+        ASSERT(m_type == Character || m_type == StartTag || m_type == EndTag);
         return m_data;
     }
 
@@ -298,28 +297,6 @@ public:
         m_data.appendVector(characters);
     }
 
-    /* Comment Tokens */
-
-    const DataVector& comment() const
-    {
-        ASSERT(m_type == Comment);
-        return m_data;
-    }
-
-    void beginComment()
-    {
-        ASSERT(m_type == Uninitialized);
-        m_type = Comment;
-    }
-
-    void appendToComment(UChar character)
-    {
-        ASSERT(character);
-        ASSERT(m_type == Comment);
-        m_data.append(character);
-        m_orAllData |= character;
-    }
-
 private:
     Type m_type;
     Attribute::Range m_range; // Always starts at zero.