Let Selection.collapse remember a raw Position instead of a canonicalized one.

Source/core/editing/EditorCommand.cpp

 /*
  * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2009 Igalia S.L.
  *
  * 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.
@@ skipping 201 matching lines @@
 static bool expandSelectionToGranularity(LocalFrame& frame, TextGranularity granularity)
 {
     VisibleSelection selection = frame.selection().selection();
     selection.expandUsingGranularity(granularity);
     RefPtrWillBeRawPtr<Range> newRange = selection.toNormalizedRange();
     if (!newRange)
         return false;
     if (newRange->collapsed())
         return false;
     EAffinity affinity = frame.selection().affinity();
-    frame.selection().setSelectedRange(newRange.get(), affinity, FrameSelection::CloseTyping);
+    frame.selection().setSelectedRange(newRange.get(), affinity, false, FrameSelection::CloseTyping);
     return true;
 }
 
 static TriState stateStyle(LocalFrame& frame, CSSPropertyID propertyID, const char* desiredValue)
 {
     if (frame.editor().behavior().shouldToggleStyleBasedOnStartOfSelection())
         return frame.editor().selectionStartHasStyle(propertyID, desiredValue) ? TrueTriState : FalseTriState;
     return frame.editor().selectionHasStyle(propertyID, desiredValue);
 }
 
@@ skipping 141 matching lines @@
     // Despite its name, this command should delete the newline at the end of
     // a paragraph if you are at the end of a paragraph.
     frame.editor().deleteWithDirection(DirectionForward, ParagraphBoundary, true, false);
     return true;
 }
 
 static bool executeDeleteToMark(LocalFrame& frame, Event*, EditorCommandSource, const String&)
 {
     RefPtrWillBeRawPtr<Range> mark = frame.editor().mark().toNormalizedRange();
     if (mark) {
-        bool selected = frame.selection().setSelectedRange(unionDOMRanges(mark.get(), frame.editor().selectedRange().get()).get(), DOWNSTREAM, FrameSelection::CloseTyping);
+        bool selected = frame.selection().setSelectedRange(unionDOMRanges(mark.get(), frame.editor().selectedRange().get()).get(), DOWNSTREAM, false, FrameSelection::CloseTyping);
         ASSERT(selected);
         if (!selected)
             return false;
     }
     frame.editor().performDelete();
     frame.editor().setMark(frame.selection().selection());
     return true;
 }
 
 static bool executeDeleteWordBackward(LocalFrame& frame, Event*, EditorCommandSource, const String&)
@@ skipping 629 matching lines @@
 {
     return expandSelectionToGranularity(frame, SentenceGranularity);
 }
 
 static bool executeSelectToMark(LocalFrame& frame, Event*, EditorCommandSource, const String&)
 {
     RefPtrWillBeRawPtr<Range> mark = frame.editor().mark().toNormalizedRange();
     RefPtrWillBeRawPtr<Range> selection = frame.editor().selectedRange();
     if (!mark || !selection)
         return false;
-    frame.selection().setSelectedRange(unionDOMRanges(mark.get(), selection.get()).get(), DOWNSTREAM, FrameSelection::CloseTyping);
+    frame.selection().setSelectedRange(unionDOMRanges(mark.get(), selection.get()).get(), DOWNSTREAM, false, FrameSelection::CloseTyping);
     return true;
 }
 
 static bool executeSelectWord(LocalFrame& frame, Event*, EditorCommandSource, const String&)
 {
     return expandSelectionToGranularity(frame, WordGranularity);
 }
 
 static bool executeSetMark(LocalFrame& frame, Event*, EditorCommandSource, const String&)
 {
@@ skipping 689 matching lines @@
 {
     return m_command && m_command->isTextInsertion;
 }
 
 int Editor::Command::idForHistogram() const
 {
     return isSupported() ? m_command->idForUserMetrics : 0;
 }
 
 } // namespace WebCore