Reduce usage of VisibleSelection::setBase() and setExtent()

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

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "core/editing/GranularityStrategy.h"
 
 #include "core/editing/EditingUtilities.h"
 #include "core/editing/FrameSelection.h"
 
 namespace blink {
@@ skipping 250 matching lines @@
 
   // Only update the state if the selection actually changed as a result of
   // this move.
   if (newSelectionExtent.deepEquivalent() !=
       selection.visibleExtent().deepEquivalent())
     m_state = thisMoveShrunkSelection ? StrategyState::Shrinking
                                       : StrategyState::Expanding;
 
   m_diffExtentPointFromExtentPosition =
       extentPoint + IntSize(m_offset, 0) - positionLocation(newSelectionExtent);
-  VisibleSelection newSelection = selection;
-  newSelection.setExtent(newSelectionExtent);
-  return newSelection;
+  return createVisibleSelection(
+      SelectionInDOMTree::Builder(selection.asSelection())
+          .collapse(selection.base())
+          .extend(newSelectionExtent.deepEquivalent())
+          .build());
 }
 
 }  // namespace blink