Make inSameLine() in VisibleUnits.cpp to work with positions in composed tree

Source/core/editing/htmlediting.h

 /*
  * Copyright (C) 2004, 2006, 2008 Apple 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 40 matching lines @@
 
 // This file contains a set of helper functions used by the editing commands
 
 // -------------------------------------------------------------------------
 // Node
 // -------------------------------------------------------------------------
 
 // Functions returning Node
 
 CORE_EXPORT ContainerNode* highestEditableRoot(const Position&, EditableType = ContentIsEditable);
+ContainerNode* highestEditableRoot(const PositionInComposedTree&, EditableType = ContentIsEditable);
 
 Node* highestEnclosingNodeOfType(const Position&, bool (*nodeIsOfType)(const Node*),
     EditingBoundaryCrossingRule = CannotCrossEditingBoundary, Node* stayWithin = nullptr);
 Node* highestNodeToRemoveInPruning(Node*, Node* excludeNode = nullptr);
 Element* lowestEditableAncestor(Node*);
 
 Element* enclosingBlock(Node*, EditingBoundaryCrossingRule = CannotCrossEditingBoundary);
 Element* enclosingBlockFlowElement(Node&); // Deprecated, use enclosingBlock instead.
 bool inSameContainingBlockFlowElement(Node*, Node*);
 Element* enclosingTableCell(const Position&);
@@ skipping 56 matching lines @@
 
 // Functions returning Position
 
 Position nextCandidate(const Position&);
 PositionInComposedTree nextCandidate(const PositionInComposedTree&);
 Position previousCandidate(const Position&);
 PositionInComposedTree previousCandidate(const PositionInComposedTree&);
 
 Position nextVisuallyDistinctCandidate(const Position&);
 Position previousVisuallyDistinctCandidate(const Position&);
+PositionInComposedTree previousVisuallyDistinctCandidate(const PositionInComposedTree&);
 
 Position positionBeforeContainingSpecialElement(const Position&, HTMLElement** containingSpecialElement = nullptr);
 Position positionAfterContainingSpecialElement(const Position&, HTMLElement** containingSpecialElement = nullptr);
 
 inline Position firstPositionInOrBeforeNode(Node* node)
 {
     return Position::firstPositionInOrBeforeNode(node);
 }
 
 inline Position lastPositionInOrAfterNode(Node* node)
 {
     return Position::lastPositionInOrAfterNode(node);
 }
 
 Position lastEditablePositionBeforePositionInRoot(const Position&, Node*);
+PositionInComposedTree lastEditablePositionBeforePositionInRoot(const PositionInComposedTree&, Node*);
 
 // comparision functions on Position
 
 int comparePositions(const Position&, const Position&);
 int comparePositions(const PositionWithAffinity&, const PositionWithAffinity&);
 
 // boolean functions on Position
 
 enum EUpdateStyle { UpdateStyle, DoNotUpdateStyle };
 // FIXME: Both isEditablePosition and isRichlyEditablePosition rely on up-to-date
 // style to give proper results. They shouldn't update style by default, but
 // should make it clear that that is the contract.
 // FIXME: isRichlyEditablePosition should also take EUpdateStyle.
 bool isEditablePosition(const Position&, EditableType = ContentIsEditable, EUpdateStyle = UpdateStyle);
+bool isEditablePosition(const PositionInComposedTree&, EditableType = ContentIsEditable, EUpdateStyle = UpdateStyle);
 bool isRichlyEditablePosition(const Position&, EditableType = ContentIsEditable);
 bool lineBreakExistsAtPosition(const Position&);
 bool isAtUnsplittableElement(const Position&);
 
 // miscellaneous functions on Position
 
 enum WhitespacePositionOption { NotConsiderNonCollapsibleWhitespace, ConsiderNonCollapsibleWhitespace };
 Position leadingWhitespacePosition(const Position&, EAffinity, WhitespacePositionOption = NotConsiderNonCollapsibleWhitespace);
 Position trailingWhitespacePosition(const Position&, EAffinity, WhitespacePositionOption = NotConsiderNonCollapsibleWhitespace);
 unsigned numEnclosingMailBlockquotes(const Position&);
@@ skipping 80 matching lines @@
     // FIXME: this is required until 6853027 is fixed and text checking can do this for us.
     return character == '\'' || character == rightSingleQuotationMarkCharacter || character == hebrewPunctuationGershayimCharacter;
 }
 
 String stringWithRebalancedWhitespace(const String&, bool startIsStartOfParagraph, bool endIsEndOfParagraph);
 const String& nonBreakingSpaceString();
 
 }
 
 #endif