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

webkit/plugins/npapi/plugin_lib.cc

 // Copyright (c) 2011 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/npapi/plugin_lib.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/metrics/stats_counters.h"
-#include "base/string_util.h"
+#include "base/strings/string_util.h"
+#include "webkit/plugins/npapi/plugin_host.h"
 #include "webkit/plugins/npapi/plugin_instance.h"
-#include "webkit/plugins/npapi/plugin_host.h"
 #include "webkit/plugins/npapi/plugin_list.h"
 
 namespace webkit {
 namespace npapi {
 
 const char kPluginLibrariesLoadedCounter[] = "PluginLibrariesLoaded";
 const char kPluginInstancesActiveCounter[] = "PluginInstancesActive";
 
 // A list of all the instantiated plugins.
 static std::vector<scoped_refptr<PluginLib> >* g_loaded_libs;
@@ skipping 319 matching lines @@
 
 void PluginLib::Shutdown() {
   if (initialized_ && !internal_) {
     NP_Shutdown();
     initialized_ = false;
   }
 }
 
 }  // namespace npapi
 }  // namespace webkit