Fix a chrome browser crash observed in chrome frame reliability test runs. Th...

ipc/ipc_sync_channel.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 "ipc/ipc_sync_channel.h"
 
 #include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "base/thread_local.h"
 #include "base/message_loop.h"
@@ skipping 302 matching lines @@
   shutdown_watcher_.StopWatching();
   Context::OnChannelError();
 }
 
 void SyncChannel::SyncContext::OnChannelOpened() {
   shutdown_watcher_.StartWatching(shutdown_event_, this);
   Context::OnChannelOpened();
 }
 
 void SyncChannel::SyncContext::OnChannelClosed() {
+  CancelPendingSends();
   shutdown_watcher_.StopWatching();
   Context::OnChannelClosed();
 }
 
 void SyncChannel::SyncContext::OnSendTimeout(int message_id) {
   AutoLock auto_lock(deserializers_lock_);
   PendingSyncMessageQueue::iterator iter;
   for (iter = deserializers_.begin(); iter != deserializers_.end(); iter++) {
     if (iter->id == message_id) {
       iter->done_event->Signal();
@@ skipping 151 matching lines @@
 void SyncChannel::OnWaitableEventSignaled(WaitableEvent* event) {
   DCHECK(event == sync_context()->GetDispatchEvent());
   // The call to DispatchMessages might delete this object, so reregister
   // the object watcher first.
   event->Reset();
   dispatch_watcher_.StartWatching(event, this);
   sync_context()->DispatchMessages();
 }
 
 }  // namespace IPC