Remove ICU header dependencies outside of /i18n directory....

base/i18n/word_iterator.cc

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/i18n/word_iterator.h"
 
 #include "base/logging.h"
 #include "unicode/ubrk.h"
+#include "unicode/uchar.h"
 #include "unicode/ustring.h"
 
 const size_t npos = -1;
 
 WordIterator::WordIterator(const string16* str, BreakType break_type)
     : iter_(NULL),
       string_(str),
       break_type_(break_type),
       prev_(npos),
       pos_(0) {
@@ skipping 42 matching lines @@
 }
 
 bool WordIterator::IsWord() const {
   return (ubrk_getRuleStatus(iter_) != UBRK_WORD_NONE);
 }
 
 string16 WordIterator::GetWord() const {
   DCHECK(prev_ != npos && pos_ != npos);
   return string_->substr(prev_, pos_ - prev_);
 }