Introduce composed tree version of isEndOfEditableOrNonEditableContent()

Source/core/editing/VisibleUnits.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 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 1604 matching lines @@
 
 VisiblePosition endOfEditableContent(const VisiblePosition& visiblePosition)
 {
     ContainerNode* highestRoot = highestEditableRoot(visiblePosition.deepEquivalent());
     if (!highestRoot)
         return VisiblePosition();
 
     return createVisiblePosition(lastPositionInNode(highestRoot));
 }
 
-bool isEndOfEditableOrNonEditableContent(const VisiblePosition& p)
+template <typename Strategy>
+static bool isEndOfEditableOrNonEditableContentAlgorithm(const VisiblePositionTemplate<Strategy>& p)
 {
     return p.isNotNull() && nextPositionOf(p).isNull();
 }
 
+bool isEndOfEditableOrNonEditableContent(const VisiblePosition& position)
+{
+    return isEndOfEditableOrNonEditableContentAlgorithm<EditingStrategy>(position);
+}
+
+bool isEndOfEditableOrNonEditableContent(const VisiblePositionInComposedTree& position)
+{
+    return isEndOfEditableOrNonEditableContentAlgorithm<EditingInComposedTreeStrategy>(position);
+}
+
 VisiblePosition leftBoundaryOfLine(const VisiblePosition& c, TextDirection direction)
 {
     return direction == LTR ? logicalStartOfLine(c) : logicalEndOfLine(c);
 }
 
 VisiblePosition rightBoundaryOfLine(const VisiblePosition& c, TextDirection direction)
 {
     return direction == LTR ? logicalEndOfLine(c) : logicalStartOfLine(c);
 }
 
@@ skipping 1363 matching lines @@
         return honorEditingBoundaryAtOrBefore(prev, visiblePosition.deepEquivalent());
     case CanSkipOverEditingBoundary:
         return skipToStartOfEditingBoundary(prev, visiblePosition.deepEquivalent());
     }
 
     ASSERT_NOT_REACHED();
     return honorEditingBoundaryAtOrBefore(prev, visiblePosition.deepEquivalent());
 }
 
 } // namespace blink