POSIX: Don't allow onunload handlers to hang a renderer forever.

chrome/common/ipc_channel_proxy.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 "base/message_loop.h"
 #include "base/thread.h"
 #include "chrome/common/ipc_channel_proxy.h"
 #include "chrome/common/ipc_logging.h"
 #include "chrome/common/ipc_message_utils.h"
 
@@ skipping 63 matching lines @@
   for (size_t i = 0; i < filters_.size(); ++i)
     filters_[i]->OnChannelConnected(peer_pid);
 
   // See above comment about using listener_message_loop_ here.
   listener_message_loop_->PostTask(FROM_HERE, NewRunnableMethod(
       this, &Context::OnDispatchConnected));
 }
 
 // Called on the IPC::Channel thread
 void ChannelProxy::Context::OnChannelError() {
+  for (size_t i = 0; i < filters_.size(); ++i)
+    filters_[i]->OnChannelError();
+
   // See above comment about using listener_message_loop_ here.
   listener_message_loop_->PostTask(FROM_HERE, NewRunnableMethod(
       this, &Context::OnDispatchError));
 }
 
 // Called on the IPC::Channel thread
 void ChannelProxy::Context::OnChannelOpened() {
   DCHECK(channel_ != NULL);
 
   // Assume a reference to ourselves on behalf of this thread.  This reference
@@ skipping 203 matching lines @@
 void ChannelProxy::OnClientConnected() {
   Channel *channel = context_.get()->channel_;
   DCHECK(channel); // Channel must have been created first.
   channel->OnClientConnected();
 }
 #endif
 
 //-----------------------------------------------------------------------------
 
 }  // namespace IPC