Expand FrameSeleciton::start() to increase chances of hoisting update layout

third_party/WebKit/Source/core/editing/EditorKeyBindings.cpp

 /*
  * Copyright (C) 2006, 2007 Apple, Inc.  All rights reserved.
  * Copyright (C) 2012 Google, Inc.  All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 48 matching lines @@
 
   if (!behavior().shouldInsertCharacter(*evt) || !canEdit())
     return false;
 
   const Element* const focusedElement = m_frame->document()->focusedElement();
   if (!focusedElement) {
     // We may lose focused element by |command.execute(evt)|.
     return false;
   }
   if (!focusedElement->containsIncludingHostElements(
-          *m_frame->selection().start().computeContainerNode())) {
+          *m_frame->selection()
+               .computeVisibleSelectionInDOMTreeDeprecated()
+               .start()
+               .computeContainerNode())) {
     // We should not insert text at selection start if selection doesn't have
     // focus. See http://crbug.com/89026
     return false;
   }
 
   // Return true to prevent default action. e.g. Space key scroll.
   if (dispatchBeforeInputInsertText(evt->target()->toNode(), keyEvent->text) !=
       DispatchEventResult::NotCanceled)
     return true;
 
   return insertText(keyEvent->text, evt);
 }
 
 void Editor::handleKeyboardEvent(KeyboardEvent* evt) {
   // Give the embedder a chance to handle the keyboard event.
   if (client().handleKeyboardEvent(m_frame) || handleEditingKeyboardEvent(evt))
     evt->setDefaultHandled();
 }
 
 }  // namespace blink