Use PositionInFlatTreeWithAffinty for SelectionController::original_base_in_flat_tree_

third_party/WebKit/Source/core/editing/SelectionController.h

 /*
  * Copyright (C) 2006, 2007, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2015 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 112 matching lines @@
   // Implements |SynchronousMutationObserver|.
   // TODO(yosin): We should relocate |m_originalBaseInFlatTree| when DOM tree
   // changed.
   void ContextDestroyed(Document*) final;
 
   bool HandleSingleClick(const MouseEventWithHitTestResults&);
   bool HandleDoubleClick(const MouseEventWithHitTestResults&);
   bool HandleTripleClick(const MouseEventWithHitTestResults&);
 
   Member<LocalFrame> const frame_;
-  // TODO(yosin): We should use |PositionWIthAffinityInFlatTree| since we
-  // should reduce usage of |VisibleSelectionInFlatTree|.
   // Used to store base before the adjustment at bidi boundary
-  VisiblePositionInFlatTree original_base_in_flat_tree_;
+  PositionInFlatTreeWithAffinity original_base_in_flat_tree_;
   bool mouse_down_may_start_select_;
   bool mouse_down_was_single_click_in_selection_;
   bool mouse_down_allows_multi_click_;
   enum class SelectionState {
     kHaveNotStartedSelection,
     kPlacedCaret,
     kExtendedSelection
   };
   SelectionState selection_state_;
 };
 
 bool IsLinkSelection(const MouseEventWithHitTestResults&);
 bool IsExtendingSelection(const MouseEventWithHitTestResults&);
 
 }  // namespace blink
 
 #endif  // SelectionController_h