From: Mike Hommey <glandium@debian.org>
Date: Sat, 27 Sep 2008 17:17:39 +0200
Subject: Don't register plugins if the MOZILLA_DISABLE_PLUGINS environment
 variable is set

---
 dom/plugins/base/nsPluginHost.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/dom/plugins/base/nsPluginHost.cpp b/dom/plugins/base/nsPluginHost.cpp
index 4cc7d89..deeb0df 100644
--- a/dom/plugins/base/nsPluginHost.cpp
+++ b/dom/plugins/base/nsPluginHost.cpp
@@ -301,6 +301,10 @@ nsPluginHost::nsPluginHost()
     Preferences::AddStrongObserver(this, "plugin.disable");
   }
 
+  const char *env = PR_GetEnv("MOZILLA_DISABLE_PLUGINS");
+  if (env && env[0])
+    mPluginsDisabled = PR_TRUE;
+
   nsCOMPtr<nsIObserverService> obsService =
       mozilla::services::GetObserverService();
   if (obsService) {