Make non-null VisibleSelections creatable only by createVisibleSelection[Deprecated]

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 54 matching lines @@
 }
 
 void CharacterGranularityStrategy::Clear() { }
 
 VisibleSelection CharacterGranularityStrategy::updateExtent(const IntPoint& extentPoint, LocalFrame* frame)
 {
     const VisiblePosition& extentPosition = visiblePositionForContentsPoint(extentPoint, frame);
     const VisibleSelection& selection = frame->selection().selection();
     if (selection.visibleBase().deepEquivalent() == extentPosition.deepEquivalent())
         return selection;
-    return VisibleSelection(selection.visibleBase(), extentPosition);
+    return createVisibleSelectionDeprecated(selection.visibleBase(), extentPosition);
 }
 
 DirectionGranularityStrategy::DirectionGranularityStrategy()
     : m_state(StrategyState::Cleared)
     , m_granularity(CharacterGranularity)
     , m_offset(0) { }
 
 DirectionGranularityStrategy::~DirectionGranularityStrategy() { }
 
 SelectionStrategy DirectionGranularityStrategy::GetType() const
@@ skipping 51 matching lines @@
     // Do not allow empty selection.
     if (newOffsetExtentPosition.deepEquivalent() == base.deepEquivalent())
         return selection;
 
     // The direction granularity strategy, particularly the "offset" feature
     // doesn't work with non-horizontal text (e.g. when the text is rotated).
     // So revert to the behavior equivalent to the character granularity
     // strategy if we detect that the text's baseline coordinate changed
     // without a line change.
     if (verticalChange && inSameLine(newOffsetExtentPosition, oldOffsetExtentPosition))
-        return VisibleSelection(selection.visibleBase(), newOffsetExtentPosition);
+        return createVisibleSelectionDeprecated(selection.visibleBase(), newOffsetExtentPosition);
 
     int oldExtentBaseOrder = selection.isBaseFirst() ? 1 : -1;
 
     int newExtentBaseOrder;
     bool thisMoveShrunkSelection;
     if (newOffsetExtentPosition.deepEquivalent() == oldOffsetExtentPosition.deepEquivalent()) {
         if (m_granularity == CharacterGranularity)
             return selection;
 
         // If we are in Word granularity, we cannot exit here, since we may pass
@@ skipping 71 matching lines @@
     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;
 }
 
 } // namespace blink