Use a direct include of strings headers in webkit/, part 2.

webkit/plugins/npapi/test/plugin_arguments_test.cc

 // Copyright (c) 2010 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 <stdlib.h>
 
 #include "webkit/plugins/npapi/test/plugin_arguments_test.h"
 
 #include "base/basictypes.h"
-#include "base/string_util.h"
-#include "base/stringprintf.h"
+#include "base/strings/string_util.h"
+#include "base/strings/stringprintf.h"
 
 namespace NPAPIClient {
 
 PluginArgumentsTest::PluginArgumentsTest(NPP id,
                                          NPNetscapeFuncs *host_functions)
   : PluginTest(id, host_functions) {
 }
 
 NPError PluginArgumentsTest::New(uint16 mode, int16 argc,
                                  const char* argn[], const char* argv[],
@@ skipping 40 matching lines @@
 }
 
 NPError PluginArgumentsTest::SetWindow(NPWindow* pNPWindow) {
   // This test just tests the arguments.  We're done now.
   this->SignalTestCompleted();
 
   return NPERR_NO_ERROR;
 }
 
 }  // namespace NPAPIClient