TextBreakIterator should use the C++ icu API instead of the C one

Source/core/rendering/RenderText.cpp

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Andrew Wellington (proton@wiretapped.net)
  * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
@@ skipping 102 matching lines @@
     }
 
     TextBreakIterator* boundary = wordBreakIterator(stringWithPrevious.characters(), length + 1);
     if (!boundary)
         return;
 
     StringBuilder result;
     result.reserveCapacity(length);
 
     int32_t endOfWord;
-    int32_t startOfWord = textBreakFirst(boundary);
-    for (endOfWord = textBreakNext(boundary); endOfWord != TextBreakDone; startOfWord = endOfWord, endOfWord = textBreakNext(boundary)) {
+    int32_t startOfWord = boundary->first();
+    for (endOfWord = boundary->next(); endOfWord != TextBreakDone; startOfWord = endOfWord, endOfWord = boundary->next()) {
         if (startOfWord) // Ignore first char of previous string
             result.append(input[startOfWord - 1] == noBreakSpace ? noBreakSpace : toTitleCase(stringWithPrevious[startOfWord]));
         for (int i = startOfWord + 1; i < endOfWord; i++)
             result.append(input[i - 1]);
     }
 
     *string = result.toString();
 }
 
 RenderText::RenderText(Node* node, PassRefPtr<StringImpl> str)
@@ skipping 1522 matching lines @@
 int RenderText::previousOffset(int current) const
 {
     if (isAllASCII() || m_text.is8Bit())
         return current - 1;
 
     StringImpl* textImpl = m_text.impl();
     TextBreakIterator* iterator = cursorMovementIterator(textImpl->characters16(), textImpl->length());
     if (!iterator)
         return current - 1;
 
-    long result = textBreakPreceding(iterator, current);
+    long result = iterator->preceding(current);
     if (result == TextBreakDone)
         result = current - 1;
 
 
     return result;
 }
 
 #if OS(MACOSX)
 
 #define HANGUL_CHOSEONG_START (0x1100)
@@ skipping 135 matching lines @@
 int RenderText::nextOffset(int current) const
 {
     if (isAllASCII() || m_text.is8Bit())
         return current + 1;
 
     StringImpl* textImpl = m_text.impl();
     TextBreakIterator* iterator = cursorMovementIterator(textImpl->characters16(), textImpl->length());
     if (!iterator)
         return current + 1;
 
-    long result = textBreakFollowing(iterator, current);
+    long result = iterator->following(current);
     if (result == TextBreakDone)
         result = current + 1;
 
     return result;
 }
 
 bool RenderText::computeCanUseSimpleFontCodePath() const
 {
     if (isAllASCII() || m_text.is8Bit())
         return true;
@@ skipping 24 matching lines @@
 
     SecureTextTimer* secureTextTimer = gSecureTextTimers->get(this);
     if (!secureTextTimer) {
         secureTextTimer = new SecureTextTimer(this);
         gSecureTextTimers->add(this, secureTextTimer);
     }
     secureTextTimer->restartWithNewText(lastTypedCharacterOffset);
 }
 
 } // namespace WebCore