wstrings: convert CppVariant and CppBoundClass to not use wstring

chrome/renderer/blocked_plugin.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 "chrome/renderer/blocked_plugin.h"
 
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
 #include "base/string_piece.h"
 #include "base/values.h"
@@ skipping 48 matching lines @@
                                   GURL(kBlockedPluginDataURL));
 
   registrar_.Add(this,
                  NotificationType::SHOULD_LOAD_PLUGINS,
                  NotificationService::AllSources());
 }
 
 BlockedPlugin::~BlockedPlugin() {}
 
 void BlockedPlugin::BindWebFrame(WebFrame* frame) {
-  BindToJavascript(frame, L"plugin");
+  BindToJavascript(frame, "plugin");
   BindMethod("load", &BlockedPlugin::Load);
 }
 
 void BlockedPlugin::WillDestroyPlugin() {
   delete this;
 }
 
 void BlockedPlugin::Observe(NotificationType type,
                             const NotificationSource& source,
                             const NotificationDetails& details) {
@@ skipping 15 matching lines @@
       render_view_->CreatePluginNoCheck(frame_,
                                         plugin_params_);
   if (new_plugin && new_plugin->initialize(container)) {
     container->setPlugin(new_plugin);
     container->invalidate();
     container->reportGeometry();
     plugin_->ReplayReceivedData(new_plugin);
     plugin_->destroy();
   }
 }