Add a base class for objects that want to filter messages on the UI thread. ...

chrome/browser/automation/automation_provider.cc

 // Copyright (c) 2010 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/automation/automation_provider.h"
 
 #include <set>
 
 #include "app/message_box_flags.h"
 #include "base/callback.h"
@@ skipping 158 matching lines @@
 
   if (!automation_resource_message_filter_.get()) {
     automation_resource_message_filter_ = new AutomationResourceMessageFilter;
   }
 
   channel_.reset(new IPC::SyncChannel(
       effective_channel_id,
       use_named_interface ? IPC::Channel::MODE_NAMED_SERVER
                           : IPC::Channel::MODE_CLIENT,
       this,
-      automation_resource_message_filter_,
       g_browser_process->io_thread()->message_loop(),
       true, g_browser_process->shutdown_event()));
+  channel_->AddFilter(automation_resource_message_filter_);
 
   TRACE_EVENT_END("AutomationProvider::InitializeChannel", 0, "");
 
   return true;
 }
 
 std::string AutomationProvider::GetProtocolVersion() {
   chrome::VersionInfo version_info;
   return version_info.Version().c_str();
 }
@@ skipping 827 matching lines @@
     }
   }
 }
 
 void AutomationProvider::SaveAsAsync(int tab_handle) {
   NavigationController* tab = NULL;
   TabContents* tab_contents = GetTabContentsForHandle(tab_handle, &tab);
   if (tab_contents)
     tab_contents->OnSavePage();
 }