Restrict visibility of internal TextCheckingParagraph predicates.

Source/core/editing/spellcheck/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 489 matching lines @@
     if (!node)
         return;
     RefPtrWillBeRawPtr<Range> rangeToCheck = Range::create(*frame().document(), firstPositionInNode(node), lastPositionInNode(node));
     TextCheckingParagraph textToCheck(rangeToCheck, rangeToCheck);
     bool asynchronous = true;
     chunkAndMarkAllMisspellingsAndBadGrammar(resolveTextCheckingTypeMask(TextCheckingTypeSpelling | TextCheckingTypeGrammar), textToCheck, asynchronous);
 }
 
 void SpellChecker::chunkAndMarkAllMisspellingsAndBadGrammar(TextCheckingTypeMask textCheckingOptions, const TextCheckingParagraph& fullParagraphToCheck, bool asynchronous)
 {
-    if (fullParagraphToCheck.isRangeEmpty() || fullParagraphToCheck.isEmpty())
+    if (fullParagraphToCheck.isEmpty())
         return;
 
     // Since the text may be quite big chunk it up and adjust to the sentence boundary.
     const int kChunkSize = 16 * 1024;
     int start = fullParagraphToCheck.checkingStart();
     int end = fullParagraphToCheck.checkingEnd();
     start = std::min(start, end);
     end = std::max(start, end);
     const int kNumChunksToCheck = asynchronous ? (end - start + kChunkSize - 1) / (kChunkSize) : 1;
     int currentChunkStart = start;
@@ skipping 417 matching lines @@
     m_spellCheckRequester->requestCheckingFor(SpellCheckRequest::create(TextCheckingTypeSpelling | TextCheckingTypeGrammar, TextCheckingProcessBatch, rangeToCheck, rangeToCheck));
 }
 
 DEFINE_TRACE(SpellChecker)
 {
     visitor->trace(m_frame);
     visitor->trace(m_spellCheckRequester);
 }
 
 } // namespace blink