Use tighter typing in editing: VisiblePosition & VisibleSelection

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 1119 matching lines @@
                 if (n == startNode && o < i)
                     i = max(0, o);
                 while (--i >= 0) {
                     if ((*text)[i] == '\n')
                         return VisiblePosition(Position(toText(n), i + 1), DOWNSTREAM);
                 }
             }
             node = n;
             offset = 0;
             n = NodeTraversal::previousPostOrder(*n, startBlock);
-        } else if (editingIgnoresContent(n) || isRenderedTable(n)) {
+        } else if (editingIgnoresContent(n) || isRenderedTableElement(n)) {
             node = n;
             type = Position::PositionIsBeforeAnchor;
             n = n->previousSibling() ? n->previousSibling() : NodeTraversal::previousPostOrder(*n, startBlock);
         } else {
             n = NodeTraversal::previousPostOrder(*n, startBlock);
         }
     }
 
     if (type == Position::PositionIsOffsetInAnchor) {
         ASSERT(type == Position::PositionIsOffsetInAnchor || !offset);
@@ skipping 57 matching lines @@
                 RenderText* text = toRenderText(r);
                 int o = n == startNode ? offset : 0;
                 for (int i = o; i < length; ++i) {
                     if ((*text)[i] == '\n')
                         return VisiblePosition(Position(toText(n), i), DOWNSTREAM);
                 }
             }
             node = n;
             offset = r->caretMaxOffset();
             n = NodeTraversal::next(*n, stayInsideBlock);
-        } else if (editingIgnoresContent(n) || isRenderedTable(n)) {
+        } else if (editingIgnoresContent(n) || isRenderedTableElement(n)) {
             node = n;
             type = Position::PositionIsAfterAnchor;
             n = NodeTraversal::nextSkippingChildren(*n, stayInsideBlock);
         } else {
             n = NodeTraversal::next(*n, stayInsideBlock);
         }
     }
 
     if (type == Position::PositionIsOffsetInAnchor)
         return VisiblePosition(Position(node, offset, type), DOWNSTREAM);
@@ skipping 173 matching lines @@
     int caretOffset;
     position.position().getInlineBoxAndOffset(position.affinity(), inlineBox, caretOffset);
 
     if (inlineBox)
         renderer = &inlineBox->renderer();
 
     return renderer->localCaretRect(inlineBox, caretOffset);
 }
 
 }