chrome: Update include paths of string_split.h to its new location.

chrome/browser/history/snippet.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/snippet.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/string_split.h"
 #include "base/string_util.h"
+#include "base/strings/string_split.h"
 #include "base/utf_string_conversions.h"
 #include "third_party/icu/public/common/unicode/brkiter.h"
 #include "third_party/icu/public/common/unicode/utext.h"
 #include "third_party/icu/public/common/unicode/utf8.h"
 
 namespace {
 
 bool PairFirstLessThan(const Snippet::MatchPosition& a,
                        const Snippet::MatchPosition& b) {
   return a.first < b.first;
@@ skipping 265 matching lines @@
   }
 
   utext_close(document_utext);
   swap(text_, snippet);
 }
 
 void Snippet::Swap(Snippet* other) {
   text_.swap(other->text_);
   matches_.swap(other->matches_);
 }