base/i18n: Pass |str| as const reference in BreakIterator::Init().

chrome/browser/history/in_memory_url_index.cc

 // Copyright (c) 2011 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 "chrome/browser/history/in_memory_url_index.h"
 
 #include <algorithm>
 #include <functional>
 #include <iterator>
 #include <limits>
@@ skipping 469 matching lines @@
        ++iter)
     word_set.insert(base::i18n::ToLower(*iter));
   return word_set;
 }
 
 // static
 InMemoryURLIndex::String16Vector InMemoryURLIndex::WordVectorFromString16(
     const string16& uni_string,
     bool break_on_space) {
   base::i18n::BreakIterator iter(
-      &uni_string,
+      uni_string,
       break_on_space ? base::i18n::BreakIterator::BREAK_SPACE
                      : base::i18n::BreakIterator::BREAK_WORD);
   String16Vector words;
   if (!iter.Init())
     return words;
   while (iter.Advance()) {
     if (break_on_space || iter.IsWord()) {
       string16 word = iter.GetString();
       if (break_on_space)
         TrimWhitespace(word, TRIM_ALL, &word);
@@ skipping 582 matching lines @@
     if (iter->has_title()) {
       string16 title(UTF8ToUTF16(iter->title()));
       url_row.set_title(title);
     }
     history_info_map_[history_id] = url_row;
   }
   return true;
 }
 
 }  // namespace history