linux: fix renderer/plugin crash when loading multiple pages with plugins

chrome/renderer/plugin_channel_host.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/renderer/plugin_channel_host.h"
 
 #include "chrome/common/plugin_messages.h"
 
+#if defined(OS_POSIX)
+#include "chrome/common/ipc_channel_posix.h"
+#endif
+
 // A simple MessageFilter that will ignore all messages and respond to sync
 // messages with an error when is_listening_ is false.
 class IsListeningFilter : public IPC::ChannelProxy::MessageFilter {
  public:
   IsListeningFilter() {}
 
   // MessageFilter overrides
   virtual void OnFilterRemoved() {}
   virtual void OnFilterAdded(IPC::Channel* channel) { channel_ = channel;  }
   virtual bool OnMessageReceived(const IPC::Message& message);
@@ skipping 50 matching lines @@
           ClassFactory,
           ipc_message_loop,
           true));
   return result;
 }
 
 PluginChannelHost::PluginChannelHost() {
 }
 
 PluginChannelHost::~PluginChannelHost() {
+#if defined(OS_POSIX)
+  IPC::RemoveAndCloseChannelSocket(channel_name());
+#endif
 }
 
 bool PluginChannelHost::Init(MessageLoop* ipc_message_loop,
                              bool create_pipe_now) {
   bool ret = PluginChannelBase::Init(ipc_message_loop, create_pipe_now);
   is_listening_filter_ = new IsListeningFilter;
   channel_->AddFilter(is_listening_filter_);
   return ret;
 }
 
@@ skipping 21 matching lines @@
 void PluginChannelHost::OnChannelError() {
   PluginChannelBase::OnChannelError();
 
   for (ProxyMap::iterator iter = proxies_.begin();
        iter != proxies_.end(); iter++) {
     iter->second->OnChannelError();
   }
 
   proxies_.clear();
 }