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

chrome/browser/importer/toolbar_importer_utils.cc

 // Copyright (c) 2012 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/importer/toolbar_importer_utils.h"
 
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
-#include "base/string_split.h"
+#include "base/strings/string_split.h"
 #include "chrome/browser/profiles/profile.h"
 #include "content/public/browser/browser_thread.h"
 #include "googleurl/src/gurl.h"
 #include "net/cookies/cookie_store.h"
 #include "net/url_request/url_request_context.h"
 #include "net/url_request/url_request_context_getter.h"
 
 using content::BrowserThread;
 
 namespace {
@@ skipping 48 matching lines @@
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   if (!callback.is_null()) {
     BrowserThread::PostTask(
         BrowserThread::IO, FROM_HERE,
         base::Bind(&FetchCookiesOnIOThread,
                    callback, base::Unretained(profile->GetRequestContext())));
   }
 }
 
 }  // namespace toolbar_importer_utils