PlzNavigate: implement CommitNavigation on the browser side

content/browser/frame_host/navigation_controller_impl.cc

Index: content/browser/frame_host/navigation_controller_impl.cc
diff --git a/content/browser/frame_host/navigation_controller_impl.cc b/content/browser/frame_host/navigation_controller_impl.cc
index 7219831781da79b9773546558123049ed17dc3f0..b17723f8bda7b2730f48b130cae41edd177fa46b 100644
--- a/content/browser/frame_host/navigation_controller_impl.cc
+++ b/content/browser/frame_host/navigation_controller_impl.cc
@@ -1733,6 +1733,25 @@ void NavigationControllerImpl::DiscardPendingEntry() {
   pending_entry_index_ = -1;
 }
 
+void NavigationControllerImpl::FillHistoryParametersForNavigationEntry(
+    const NavigationEntryImpl& entry,
+    int* pending_history_list_offset,
+    int* current_history_list_offset,
+    int* current_history_list_length) const {
+  if (entry.should_clear_history_list()) {
+    // Set the history list related parameters to the same values a
+    // NavigationController would return before its first navigation. This will
+    // fully clear the RenderView's view of the session history.
+    *pending_history_list_offset = -1;
+    *current_history_list_offset = -1;
+    *current_history_list_length = 0;
+  } else {
+    *pending_history_list_offset = GetIndexOfEntry(&entry);
+    *current_history_list_offset = GetLastCommittedEntryIndex();
+    *current_history_list_length = GetEntryCount();
+  }
+}
+
 void NavigationControllerImpl::DiscardTransientEntry() {
   if (transient_entry_index_ == -1)
     return;