Use SelectionPaintRange::Iterator in LayoutSelection::ClearSelection().

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights
  * reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
@@ skipping 297 matching lines @@
 void LayoutSelection::ClearSelection() {
   // For querying Layer::compositingState()
   // This is correct, since destroying layout objects needs to cause eager paint
   // invalidations.
   DisableCompositingQueryAsserts disabler;
 
   // Just return if the selection is already empty.
   if (paint_range_.IsNull())
     return;
 
-  const SelectedMap& old_selected_map = CollectSelectedMap(
-      paint_range_, CollectSelectedMapOption::kNotCollectBlock);
-  // Clear SelectionState and invalidation.
-  // TODO(yoichio): Iterate with *this directrly.
-  for (auto layout_object : old_selected_map.object_map.Keys()) {
+  for (auto layout_object : paint_range_) {
     const SelectionState old_state = layout_object->GetSelectionState();
     layout_object->SetSelectionStateIfNeeded(SelectionState::kNone);
     if (layout_object->GetSelectionState() == old_state)
       continue;
     layout_object->SetShouldInvalidateSelection();
   }
 
   // Reset selection.
   paint_range_ = SelectionPaintRange();
 }
@@ skipping 129 matching lines @@
 
     runner->SetShouldInvalidateSelection();
   }
 }
 
 DEFINE_TRACE(LayoutSelection) {
   visitor->Trace(frame_selection_);
 }
 
 }  // namespace blink