Convert HTMLFrameOwnerElement and FocusController to use Frame.

Source/core/editing/Editor.cpp

Index: Source/core/editing/Editor.cpp
diff --git a/Source/core/editing/Editor.cpp b/Source/core/editing/Editor.cpp
index 0dc1f6d4bb8980881db641d741b1965ecd8333d8..d1c30dd2d26b45c97cb0feeec451352eda08c1d2 100644
--- a/Source/core/editing/Editor.cpp
+++ b/Source/core/editing/Editor.cpp
@@ -805,7 +805,7 @@ bool Editor::insertTextWithoutSendingTextEvent(const String& text, bool selectIn
             // Reveal the current selection
             if (LocalFrame* editedFrame = document->frame()) {
                 if (Page* page = editedFrame->page())
-                    page->focusController().focusedOrMainFrame()->selection().revealSelection(ScrollAlignment::alignCenterIfNeeded);
+                    toLocalFrame(page->focusController().focusedOrMainFrame())->selection().revealSelection(ScrollAlignment::alignCenterIfNeeded);
             }
         }
     }