Remove unused includes of plugin_list.h. Also remove unused ContentClient and webkit_support method…

content/plugin/plugin_thread.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 "content/plugin/plugin_thread.h"
 
 #include "build/build_config.h"
 
 #if defined(TOOLKIT_GTK)
 #include <gtk/gtk.h>
@@ skipping 110 matching lines @@
   if (plugin.get()) {
     plugin->NP_Initialize();
     // For OOP plugins the plugin dll will be unloaded during process shutdown
     // time.
     plugin->set_defer_unload(true);
   }
 
   GetContentClient()->plugin()->PluginProcessStarted(
       plugin.get() ? plugin->plugin_info().name : string16());
 
-  GetContentClient()->AddNPAPIPlugins(
-      webkit::npapi::PluginList::Singleton());
-
   // Certain plugins, such as flash, steal the unhandled exception filter
   // thus we never get crash reports when they fault. This call fixes it.
   message_loop()->set_exception_restoration(true);
   channel()->AddFilter(new EnsureTerminateMessageFilter());
 }
 
 PluginThread::~PluginThread() {
 }
 
 void PluginThread::Shutdown() {
@@ skipping 41 matching lines @@
   }
 
   Send(new PluginProcessHostMsg_ChannelCreated(channel_handle));
 }
 
 void PluginThread::OnNotifyRenderersOfPendingShutdown() {
   PluginChannel::NotifyRenderersOfPendingShutdown();
 }
 
 }  // namespace content