linux (and some posix): multiprocess plugins compiling.

chrome/plugin/plugin_channel_base.h

 // 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.
 
 #ifndef CHROME_WEBKIT_GLUE_PLUGIN_CHANNEL_BASE_H__
 #define CHROME_WEBKIT_GLUE_PLUGIN_CHANNEL_BASE_H__
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 90 matching lines @@
   ListenerMap npobject_listeners_;
 
   // Used to implement message routing functionality to WebPlugin[Delegate]
   // objects
   MessageRouter router_;
 
   // A channel is invalid if it is disconnected as a result of a channel
   // error. This flag is used to indicate the same.
   bool channel_valid_;
 
+  // Track whether we're within a dispatch; works like a refcount, 0 when we're
+  // not.
+  int in_dispatch_;
+
   // If true, sync messages will only be marked as unblocking if the channel is
   // in the middle of dispatching a message.
   bool send_unblocking_only_during_dispatch_;
-  int in_dispatch_;
 
   DISALLOW_EVIL_CONSTRUCTORS(PluginChannelBase);
 };
 
 #endif  // CHROME_WEBKIT_GLUE_PLUGIN_CHANNEL_BASE_H__