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

chrome/browser/google_apis/test_server/http_request.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/google_apis/test_server/http_request.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
-#include "base/string_split.h"
 #include "base/string_util.h"
 #include "base/strings/string_number_conversions.h"
+#include "base/strings/string_split.h"
 
 namespace google_apis {
 namespace test_server {
 
 namespace {
 
 size_t kRequestSizeLimit = 64 * 1024 * 1024;  // 64 mb.
 
 // Helper function used to trim tokens in http request headers.
 std::string Trim(const std::string& value) {
@@ skipping 170 matching lines @@
     return METHOD_DELETE;
   } else if (token == "patch") {
     return METHOD_PATCH;
   }
   NOTREACHED() << "Method not implemented: " << token;
   return METHOD_UNKNOWN;
 }
 
 }  // namespace test_server
 }  // namespace google_apis