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

webkit/plugins/ppapi/url_request_info_util.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 "webkit/plugins/ppapi/url_request_info_util.h"
 
 #include "base/logging.h"
-#include "base/string_util.h"
+#include "base/strings/string_util.h"
 #include "googleurl/src/gurl.h"
 #include "googleurl/src/url_util.h"
 #include "net/http/http_util.h"
 #include "ppapi/shared_impl/url_request_info_data.h"
 #include "ppapi/shared_impl/var.h"
 #include "ppapi/thunk/enter.h"
 #include "third_party/WebKit/public/platform/WebData.h"
 #include "third_party/WebKit/public/platform/WebHTTPBody.h"
 #include "third_party/WebKit/public/platform/WebURL.h"
 #include "third_party/WebKit/public/platform/WebURLRequest.h"
@@ skipping 178 matching lines @@
     const ::ppapi::URLRequestInfoData& data) {
   return
       data.has_custom_referrer_url ||
       data.has_custom_content_transfer_encoding ||
       data.has_custom_user_agent ||
       url_util::FindAndCompareScheme(data.url, "javascript", NULL);
 }
 
 }  // namespace ppapi
 }  // namespace webkit