Remove some code inside USE_AURA and OS_WIN ifdefs.

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 63 matching lines @@
     LAZY_INSTANCE_INITIALIZER;
 
 PluginThread::PluginThread()
     : preloaded_plugin_module_(NULL),
       forcefully_terminate_plugin_process_(false) {
   base::FilePath plugin_path =
       CommandLine::ForCurrentProcess()->GetSwitchValuePath(
           switches::kPluginPath);
 
   lazy_tls.Pointer()->Set(this);
-#if defined(USE_AURA)
-  // TODO(saintlou):
-#elif defined(TOOLKIT_GTK)
+#if defined(TOOLKIT_GTK)
   {
     // XEmbed plugins assume they are hosted in a Gtk application, so we need
     // to initialize Gtk in the plugin process.
     // g_thread_init API is deprecated since glib 2.31.0, see release note:
     // http://mail.gnome.org/archives/gnome-announce-list/2011-October/msg00041.html
 #if !(GLIB_CHECK_VERSION(2, 31, 0))
     g_thread_init(NULL);
 #endif
 
     // Flash has problems receiving clicks with newer GTKs due to the
@@ skipping 85 matching lines @@
   }
 
   Send(new PluginProcessHostMsg_ChannelCreated(channel_handle));
 }
 
 void PluginThread::OnNotifyRenderersOfPendingShutdown() {
   PluginChannel::NotifyRenderersOfPendingShutdown();
 }
 
 }  // namespace content