This is a rename of the term 'Greasemonkey' to 'user script' in Chromium.

chrome/renderer/renderer.scons

 # 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.
 
 Import('env')
 
 env = env.Clone()
 
 env.SConscript([
     '$CHROME_DIR/third_party/wtl/using_wtl.scons',
@@ skipping 16 matching lines @@
       ],
   )
 
 input_files = [
     'about_handler.cc',
     'chrome_plugin_host.cc',
     'debug_message_handler.cc',
     'dom_ui_bindings.cc',
     'external_host_bindings.cc',
     'external_js_object.cc',
-    'greasemonkey_slave.cc',
     'localized_error.cc',
     'plugin_channel_host.cc',
     'render_process.cc',
     'render_thread.cc',
     'render_view.cc',
     'render_widget.cc',
     'renderer_glue.cc',
     'renderer_main.cc',
+    'user_script_slave.cc',
     'visitedlink_slave.cc',
     'webmediaplayer_delegate_impl.cc',
     'webplugin_delegate_proxy.cc',
     'automation/dom_automation_controller.cc',
 
     'net/render_dns_master.cc',
     'net/render_dns_queue.cc',
 ]
 
 # TODO(port): Port these to Linux
@@ skipping 37 matching lines @@
 
 # TODO(port): Enable for Mac.
 if not env.Bit('mac'):
   env.ChromeLibrary('renderer', input_files)
 
 env.ChromeMSVSProject('$CHROME_DIR/renderer/renderer.vcproj',
                 dependencies = [
                     '$CHROME_DIR/app/generated_resources.vcproj',
                 ],
                 guid='{9301A569-5D2B-4D11-9332-B1E30AEACB8D}')