Rename {first,last}EditablePosition{After,Before}Position... to denote them returned VisiblePosition

Source/core/editing/SpellChecker.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  *
  * 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
@@ skipping 162 matching lines @@
     }
 
     Position position = spellingSearchRange->startPosition();
     if (!isEditablePosition(position)) {
         // This shouldn't happen in very often because the Spelling menu items aren't enabled unless the
         // selection is editable.
         // This can happen in Mail for a mix of non-editable and editable content (like Stationary),
         // when spell checking the whole document before sending the message.
         // In that case the document might not be editable, but there are editable pockets that need to be spell checked.
 
-        position = firstEditablePositionAfterPositionInRoot(position, m_frame.document()->documentElement()).deepEquivalent();
+        position = firstEditableVisiblePositionAfterPositionInRoot(position, m_frame.document()->documentElement()).deepEquivalent();
         if (position.isNull())
             return;
 
         Position rangeCompliantPosition = position.parentAnchoredEquivalent();
         spellingSearchRange->setStart(rangeCompliantPosition.deprecatedNode(), rangeCompliantPosition.deprecatedEditingOffset(), IGNORE_EXCEPTION);
         startedWithSelection = false; // won't need to wrap
     }
 
     // topNode defines the whole range we want to operate on
     Node* topNode = highestEditableRoot(position);
@@ skipping 653 matching lines @@
 }
 
 void SpellChecker::requestTextChecking(const Element& element)
 {
     RefPtrWillBeRawPtr<Range> rangeToCheck = rangeOfContents(const_cast<Element*>(&element));
     m_spellCheckRequester->requestCheckingFor(SpellCheckRequest::create(TextCheckingTypeSpelling | TextCheckingTypeGrammar, TextCheckingProcessBatch, rangeToCheck, rangeToCheck));
 }
 
 
 } // namespace WebCore