$OpenBSD$

index edc88d1..24d4491 100755
--- dom/plugins/ipc/PluginModuleParent.cpp.orig	Fri Feb 20 15:40:37 2015
+++ dom/plugins/ipc/PluginModuleParent.cpp	Fri Feb 20 15:40:37 2015
@@ -103,6 +103,11 @@ PluginModuleParent::LoadModule(const char* aFilePath)
     parent->Open(parent->mSubprocess->GetChannel(),
                  parent->mSubprocess->GetChildProcessHandle());
 
+    // Request Windows message deferral behavior on our channel. This
+    // applies to the top level and all sub plugin protocols since they
+    // all share the same channel.
+    parent->GetIPCChannel()->SetChannelFlags(MessageChannel::REQUIRE_DEFERRED_MESSAGE_PROTECTION);
+
     TimeoutChanged(CHILD_TIMEOUT_PREF, parent);
 
 #ifdef MOZ_CRASHREPORTER