LibWeb: Implement "attempt to populate the history entry's document"

Implements:
https://html.spec.whatwg.org/multipage/browsing-the-web.html#attempt-to-populate-the-history-entry's-document

This is going to be a replacement for `FrameLoader::load()` after
switching to navigables.

Brief description of `populate_session_history_entry_document`:
- If navigation params have url with fetch scheme then DOM document
  will be populated by fetching url and parsing response. This
  is going to be a replacement for `FrameLoader::load(AK::URL&)`.
- If url in navigation params is abort:srcdoc then DOM document
  will be populated by parsing HTML text passed in document resource.
  This is going to be a replacement for `FrameLoader::load_html()`

1 files changed, 2 insertions, 0 deletions

diff --git a/Userland/Libraries/LibWeb/DOM/DocumentLoading.h b/Userland/Libraries/LibWeb/DOM/DocumentLoading.h
index 0b330e1458..aa87db2a21 100644
--- a/Userland/Libraries/LibWeb/DOM/DocumentLoading.h
+++ b/Userland/Libraries/LibWeb/DOM/DocumentLoading.h
@@ -12,5 +12,7 @@
 namespace Web {
 
 bool parse_document(DOM::Document& document, ByteBuffer const& data);
+JS::GCPtr<DOM::Document> load_document(Optional<HTML::NavigationParams> navigation_params);
+JS::GCPtr<DOM::Document> create_document_for_inline_content(JS::GCPtr<HTML::Navigable> navigable, Optional<String> navigation_id, StringView content_html);
 
 }