Make startOfParagraph() not to use Position::deprecatedEditingOffset()

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 1117 matching lines @@
     if (!startNode)
         return VisiblePosition();
 
     if (isRenderedAsNonInlineTableImageOrHR(startNode))
         return VisiblePosition(positionBeforeNode(startNode));
 
     Element* startBlock = enclosingBlock(startNode);
 
     Node* node = startNode;
     ContainerNode* highestRoot = highestEditableRoot(p);
-    int offset = p.deprecatedEditingOffset();
+    int offset = p.computeEditingOffset();
     PositionAnchorType type = p.anchorType();
 
     Node* n = startNode;
     bool startNodeIsEditable = startNode->hasEditableStyle();
     while (n) {
         if (boundaryCrossingRule == CannotCrossEditingBoundary && !Position::nodeIsUserSelectAll(n) && n->hasEditableStyle() != startNodeIsEditable)
             break;
         if (boundaryCrossingRule == CanSkipOverEditingBoundary) {
             while (n && n->hasEditableStyle() != startNodeIsEditable)
                 n = NodeTraversal::previousPostOrder(*n, startBlock);
@@ skipping 303 matching lines @@
     HitTestRequest request = HitTestRequest::Move | HitTestRequest::ReadOnly | HitTestRequest::Active | HitTestRequest::IgnoreClipping;
     HitTestResult result(request, contentsPoint);
     frame->document()->layoutView()->hitTest(result);
 
     if (Node* node = result.innerNode())
         return frame->selection().selection().visiblePositionRespectingEditingBoundary(result.localPoint(), node);
     return VisiblePosition();
 }
 
 }