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

chrome/test/webdriver/commands/webelement_commands.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/test/webdriver/commands/webelement_commands.h"
 
 #include "base/file_util.h"
 #include "base/format_macros.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/string_split.h"
 #include "base/string_util.h"
 #include "base/stringprintf.h"
+#include "base/strings/string_split.h"
 #include "base/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/test/webdriver/commands/response.h"
 #include "chrome/test/webdriver/webdriver_basic_types.h"
 #include "chrome/test/webdriver/webdriver_error.h"
 #include "chrome/test/webdriver/webdriver_session.h"
 #include "chrome/test/webdriver/webdriver_util.h"
 #include "third_party/webdriver/atoms.h"
 
 namespace webdriver {
@@ skipping 600 matching lines @@
     return;
   }
   if (!result->IsType(base::Value::TYPE_STRING)) {
     response->SetError(new Error(kUnknownError, "Result is not string type"));
     return;
   }
   response->SetValue(result.release());
 }
 
 }  // namespace webdriver