Fix browser hang due to plugin deadlock...

chrome/plugin/plugin_channel_base.cc

 // 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.
 
 #include "chrome/plugin/plugin_channel_base.h"
 
 #include "base/hash_tables.h"
 #include "chrome/common/child_process.h"
 #include "chrome/common/ipc_sync_message.h"
 
@@ skipping 29 matching lines @@
   }
 
   return channel;
 }
 
 PluginChannelBase::PluginChannelBase()
     : plugin_count_(0),
       peer_pid_(0),
       in_remove_route_(false),
       channel_valid_(false),
-      in_dispatch_(0),
       send_unblocking_only_during_dispatch_(false) {
 }
 
 PluginChannelBase::~PluginChannelBase() {
 }
 
+int PluginChannelBase::in_dispatch_ = 0;
+
 void PluginChannelBase::CleanupChannels() {
   // Make a copy of the references as we can't iterate the map since items will
   // be removed from it as we clean them up.
   std::vector<scoped_refptr<PluginChannelBase> > channels;
   for (PluginChannelMap::const_iterator iter = g_plugin_channels_.begin();
        iter != g_plugin_channels_.end();
        ++iter) {
     channels.push_back(iter->second);
   }
 
@@ skipping 116 matching lines @@
       "should override in subclass if you care about control messages";
 }
 
 void PluginChannelBase::OnChannelError() {
   channel_valid_ = false;
 }
 
 void PluginChannelBase::SendUnblockingOnlyDuringDispatch() {
   send_unblocking_only_during_dispatch_ = true;
 }