LibWeb: Handle two kinds of deferred script executions

This patch adds two script lists to Document:

- Scripts to execute when parsing has finished
- Scripts to execute as soon as possible

Since we don't actually load scripts asynchronously yet (we just do a
synchronous load when parsing the <script> element for simplicity),
these are already loaded by the time we get to "The end" of parsing.

Libraries/LibWeb/DOM/Document.cpp

@@ -51,10 +51,10 @@
 #include <LibWeb/DOM/Window.h>
 #include <LibWeb/Dump.h>
 #include <LibWeb/Frame.h>
-#include <LibWeb/PageView.h>
 #include <LibWeb/Layout/LayoutDocument.h>
 #include <LibWeb/Layout/LayoutTreeBuilder.h>
 #include <LibWeb/Origin.h>
+#include <LibWeb/PageView.h>
 #include <LibWeb/Parser/CSSParser.h>
 #include <stdio.h>
 
@@ -429,4 +429,24 @@ NonnullRefPtr<HTMLScriptElement> Document::take_pending_parsing_blocking_script(
     return m_pending_parsing_blocking_script.release_nonnull();
 }
 
+void Document::add_script_to_execute_when_parsing_has_finished(Badge<HTMLScriptElement>, HTMLScriptElement& script)
+{
+    m_scripts_to_execute_when_parsing_has_finished.append(script);
+}
+
+NonnullRefPtrVector<HTMLScriptElement> Document::take_scripts_to_execute_when_parsing_has_finished(Badge<HTMLDocumentParser>)
+{
+    return move(m_scripts_to_execute_when_parsing_has_finished);
+}
+
+void Document::add_script_to_execute_as_soon_as_possible(Badge<HTMLScriptElement>, HTMLScriptElement& script)
+{
+    m_scripts_to_execute_as_soon_as_possible.append(script);
+}
+
+NonnullRefPtrVector<HTMLScriptElement> Document::take_scripts_to_execute_as_soon_as_possible(Badge<HTMLDocumentParser>)
+{
+    return move(m_scripts_to_execute_as_soon_as_possible);
+}
+
 }