Transfer CF downloads to the host browser....

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 379 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_) {
+      // In case the host needs to show UI that needs to take the focus.
+      ::AllowSetForegroundWindow(ASFW_ANY);
+
       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.";
   }
 
@@ skipping 288 matching lines @@
     int tab_handle) {
   request_context_ =
       AutomationRequestContext::CreateAutomationURLRequestContextForTab(
           tab_handle, tab_contents_->profile(),
           automation_resource_message_filter_);
 
   DCHECK(request_context_.get() != NULL);
   tab_contents_->set_request_context(request_context_.get());
 }