ChromeFrame HTTP requests would randomly fail if we navigated to multiple HTT...

chrome/browser/external_tab_container.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/browser/external_tab_container.h"
 
 #include <string>
 
 #include "app/l10n_util.h"
 #include "app/win_util.h"
@@ skipping 386 matching lines @@
     automation_->Send(new AutomationMsg_TabbedOut(0, tab_handle_,
         win_util::IsShiftPressed()));
   }
 
   return true;
 }
 
 bool ExternalTabContainer::CanDownload(int request_id) {
   if (load_requests_via_automation_) {
     if (automation_) {
-      // NOTE: The request_id must be the same id as used by corresponding
-      // URLRequestAutomationJob instance to communicate with the host.
-      automation_->Send(new AutomationMsg_DownloadRequestInHost(0, tab_handle_,
-                                                                request_id));
+      ChromeThread::PostTask(ChromeThread::IO, FROM_HERE,
+          NewRunnableMethod(automation_resource_message_filter_,
+              &AutomationResourceMessageFilter::SendDownloadRequestToHost,
+              0, tab_handle_, request_id));
     }
   } else {
     DLOG(WARNING) << "Downloads are only supported with host browser network "
                      "stack enabled.";
   }
 
   // Never allow downloads.
   return false;
 }
 
@@ skipping 272 matching lines @@
 
 bool ExternalTabContainer::OnGoToEntryOffset(int offset) {
   if (load_requests_via_automation_) {
     automation_->Send(new AutomationMsg_RequestGoToHistoryEntryOffset(
         0, tab_handle_, offset));
     return false;
   }
 
   return true;
 }