LibWeb: Remove most uses of the old HTML parser

The only remaining client of the old parser is the fragment parser used
by the Element.innerHTML setter. We'll need to implement a bit more
stuff in the new parser before we can switch that over.

Libraries/LibWeb/Loader/FrameLoader.cpp

@@ -54,7 +54,7 @@ static RefPtr<Document> create_markdown_document(const ByteBuffer& data, const U
     if (!markdown_document)
         return nullptr;
 
-    return parse_html_document(markdown_document->render_to_html(), url);
+    return parse_html_document(markdown_document->render_to_html(), url, "utf-8");
 }
 
 static RefPtr<Document> create_text_document(const ByteBuffer& data, const URL& url)
@@ -116,7 +116,7 @@ static RefPtr<Document> create_gemini_document(const ByteBuffer& data, const URL
 {
     auto markdown_document = Gemini::Document::parse({ (const char*)data.data(), data.size() }, url);
 
-    return parse_html_document(markdown_document->render_to_html(), url);
+    return parse_html_document(markdown_document->render_to_html(), url, "utf-8");
 }
 
 RefPtr<Document> FrameLoader::create_document_from_mime_type(const ByteBuffer& data, const URL& url, const String& mime_type, const String& encoding)
@@ -190,7 +190,7 @@ void FrameLoader::load_error_page(const URL& failed_url, const String& error)
                 String::copy(data).characters(),
                 escape_html_entities(failed_url.to_string()).characters(),
                 escape_html_entities(error).characters());
-            auto document = parse_html_document(html, failed_url);
+            auto document = parse_html_document(html, failed_url, "utf-8");
             ASSERT(document);
             frame().set_document(document);
             frame().page().client().page_did_change_title(document->title());

Libraries/LibWeb/Parser/HTMLDocumentParser.cpp

@@ -46,6 +46,13 @@
 
 namespace Web {
 
+RefPtr<Document> parse_html_document(const StringView& data, const URL& url, const String& encoding)
+{
+    HTMLDocumentParser parser(data, encoding);
+    parser.run(url);
+    return parser.document();
+}
+
 HTMLDocumentParser::HTMLDocumentParser(const StringView& input, const String& encoding)
     : m_tokenizer(input, encoding)
 {

Libraries/LibWeb/Parser/HTMLDocumentParser.h

@@ -59,6 +59,8 @@
 
 namespace Web {
 
+RefPtr<Document> parse_html_document(const StringView&, const URL&, const String& encoding);
+
 class HTMLDocumentParser {
 public:
     HTMLDocumentParser(const StringView& input, const String& encoding);

Libraries/LibWeb/Parser/HTMLParser.cpp

@@ -82,7 +82,7 @@ static Vector<char> codepoint_to_bytes(const u32 codepoint)
     return bytes;
 }
 
-static bool parse_html_document(const StringView& html, Document& document, ParentNode& root)
+static bool deprecated_parse_html_document(const StringView& html, Document& document, ParentNode& root)
 {
     NonnullRefPtrVector<ParentNode> node_stack;
     node_stack.append(root);
@@ -466,19 +466,19 @@ String to_utf8(const StringView& input, const String& encoding)
 RefPtr<DocumentFragment> parse_html_fragment(Document& document, const StringView& raw_html, const String& encoding)
 {
     auto fragment = adopt(*new DocumentFragment(document));
-    if (!parse_html_document(to_utf8(raw_html, encoding), document, *fragment))
+    if (!deprecated_parse_html_document(to_utf8(raw_html, encoding), document, *fragment))
         return nullptr;
     return fragment;
 }
 
-RefPtr<Document> parse_html_document(const StringView& raw_html, const URL& url, const String& encoding)
+RefPtr<Document> deprecated_parse_html_document(const StringView& raw_html, const URL& url, const String& encoding)
 {
     String html = to_utf8(raw_html, encoding);
 
     auto document = adopt(*new Document(url));
     document->set_source(html);
 
-    if (!parse_html_document(html, *document, *document))
+    if (!deprecated_parse_html_document(html, *document, *document))
         return nullptr;
 
     document->fixup();

Libraries/LibWeb/Parser/HTMLParser.h

@@ -33,7 +33,6 @@ namespace Web {
 
 class DocumentFragment;
 
-RefPtr<Document> parse_html_document(const StringView&, const URL& = URL(), const String& encoding = "utf-8");
 RefPtr<DocumentFragment> parse_html_fragment(Document&, const StringView&, const String& encoding = "utf-8");
 
 }