Fix browser hang due to plugin deadlock...

webkit/glue/plugins/test/plugin_client.cc

 // Copyright (c) 2006-2008 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 "base/string_util.h"
 #include "webkit/glue/plugins/test/plugin_client.h"
 #include "webkit/glue/plugins/test/plugin_arguments_test.h"
 #include "webkit/glue/plugins/test/plugin_delete_plugin_in_stream_test.h"
 #include "webkit/glue/plugins/test/plugin_get_javascript_url_test.h"
 #include "webkit/glue/plugins/test/plugin_geturl_test.h"
@@ skipping 91 matching lines @@
   } else if (test_name == "geturl") {
     new_test = new NPAPIClient::PluginGetURLTest(instance,
       NPAPIClient::PluginClient::HostFunctions());
   } else if (test_name == "npobject_proxy") {
     new_test = new NPAPIClient::NPObjectProxyTest(instance,
       NPAPIClient::PluginClient::HostFunctions());
 #if defined(OS_WIN)
   // TODO(port): plugin_windowless_test.*.
   } else if (test_name == "execute_script_delete_in_paint" ||
              test_name == "execute_script_delete_in_mouse_move" ||
-             test_name == "delete_frame_test") {
+             test_name == "delete_frame_test" ||
+             test_name == "multiple_instances_sync_calls") {
     new_test = new NPAPIClient::WindowlessPluginTest(instance,
       NPAPIClient::PluginClient::HostFunctions(), test_name);
     windowless_plugin = true;
 #endif
   } else if (test_name == "getjavascripturl") {
     new_test = new NPAPIClient::ExecuteGetJavascriptUrlTest(instance,
       NPAPIClient::PluginClient::HostFunctions());
 #if defined(OS_WIN)
   // TODO(port): plugin_window_size_test.*.
   } else if (test_name == "checkwindowrect") {
@@ skipping 176 matching lines @@
     (NPAPIClient::PluginTest*)instance->pdata;
 
   return plugin->HandleEvent(event);
 }
 
 void* NPP_GetJavaClass(void) {
   // XXXMB - do work here.
   return NULL;
 }
 } // extern "C"