Include ICU headers in a way that will also work with use_system_icu=1

chrome/renderer/spellchecker/spellcheck_worditerator.cc

 // Copyright (c) 2010 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.
 
 // Implements a custom word iterator used for our spellchecker.
 
 #include "chrome/renderer/spellchecker/spellcheck_worditerator.h"
 
 #include <map>
 #include <string>
 
+#include "unicode/normlzr.h"
+#include "unicode/schriter.h"
+#include "unicode/uscript.h"
+#include "unicode/ulocdata.h"
+
 #include "base/basictypes.h"
 #include "base/logging.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/renderer/spellchecker/spellcheck.h"
-#include "third_party/icu/public/common/unicode/normlzr.h"
-#include "third_party/icu/public/common/unicode/schriter.h"
-#include "third_party/icu/public/common/unicode/uscript.h"
-#include "third_party/icu/public/i18n/unicode/ulocdata.h"
 
 // SpellcheckCharAttribute implementation:
 
 SpellcheckCharAttribute::SpellcheckCharAttribute()
     : script_code_(USCRIPT_LATIN) {
 }
 
 SpellcheckCharAttribute::~SpellcheckCharAttribute() {
 }
 
@@ skipping 328 matching lines @@
   if (status != U_ZERO_ERROR && status != U_STRING_NOT_TERMINATED_WARNING)
     return false;
 
   // Copy the normalized text to the output.
   icu::StringCharacterIterator it(output);
   for (UChar c = it.first(); c != icu::CharacterIterator::DONE; c = it.next())
     attribute_->OutputChar(c, output_string);
 
   return !output_string->empty();
 }