Implemented policy to disable plugin finder.

chrome/plugin/plugin_thread.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/plugin/plugin_thread.h"
 
 #include "build/build_config.h"
 
 #if defined(USE_X11)
 #include <gtk/gtk.h>
@@ skipping 186 matching lines @@
     NOTREACHED();
     return false;
   }
 
   PluginThread* plugin_thread = PluginThread::current();
   if (!plugin_thread)
     return false;
 
   plugin_thread->Send(
       new PluginProcessHostMsg_GetPluginFinderUrl(plugin_finder_url));
-  DCHECK(!plugin_finder_url->empty());
+  // If we get an empty string back this means the plugin finder has been
+  // disabled.
   return true;
 }
 
 bool IsDefaultPluginEnabled() {
   return true;
 }
 
 // Dispatch the resolve proxy resquest to the right code, depending on which
 // process the plugin is running in {renderer, browser, plugin}.
 bool FindProxyForUrl(const GURL& url, std::string* proxy_list) {
@@ skipping 10 matching lines @@
   }
 
   if (!result || net_error != net::OK)
     return false;
 
   *proxy_list = proxy_result;
   return true;
 }
 
 }  // namespace webkit_glue