Split ExtensionMessageFilter up into a UI thread part and an IO thread part.

extensions/browser/api/web_request/web_request_api.cc

 // Copyright (c) 2012 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 "extensions/browser/api/web_request/web_request_api.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 16 matching lines @@
 #include "extensions/browser/api/declarative_webrequest/request_stage.h"
 #include "extensions/browser/api/declarative_webrequest/webrequest_constants.h"
 #include "extensions/browser/api/declarative_webrequest/webrequest_rules_registry.h"
 #include "extensions/browser/api/extensions_api_client.h"
 #include "extensions/browser/api/web_request/upload_data_presenter.h"
 #include "extensions/browser/api/web_request/web_request_api_constants.h"
 #include "extensions/browser/api/web_request/web_request_api_helpers.h"
 #include "extensions/browser/api/web_request/web_request_event_router_delegate.h"
 #include "extensions/browser/api/web_request/web_request_time_tracker.h"
 #include "extensions/browser/event_router.h"
-#include "extensions/browser/extension_message_filter.h"
 #include "extensions/browser/extension_prefs.h"
 #include "extensions/browser/extension_registry.h"
 #include "extensions/browser/extension_system.h"
 #include "extensions/browser/extensions_browser_client.h"
 #include "extensions/browser/guest_view/web_view/web_view_constants.h"
 #include "extensions/browser/guest_view/web_view/web_view_renderer_state.h"
 #include "extensions/browser/info_map.h"
+#include "extensions/browser/io_thread_extension_message_filter.h"
 #include "extensions/browser/runtime_data.h"
 #include "extensions/browser/warning_service.h"
 #include "extensions/browser/warning_set.h"
 #include "extensions/common/api/web_request.h"
 #include "extensions/common/error_utils.h"
 #include "extensions/common/event_filtering_info.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/features/feature.h"
 #include "extensions/common/permissions/permissions_data.h"
 #include "extensions/common/url_pattern.h"
@@ skipping 2156 matching lines @@
 
   std::string event_name;
   EXTENSION_FUNCTION_VALIDATE(args_->GetString(3, &event_name));
 
   std::string sub_event_name;
   EXTENSION_FUNCTION_VALIDATE(args_->GetString(4, &sub_event_name));
 
   int web_view_instance_id = 0;
   EXTENSION_FUNCTION_VALIDATE(args_->GetInteger(5, &web_view_instance_id));
 
-  base::WeakPtr<extensions::ExtensionMessageFilter> ipc_sender =
+  base::WeakPtr<extensions::IOThreadExtensionMessageFilter> ipc_sender =
       ipc_sender_weak();
   int embedder_process_id =
       ipc_sender.get() && web_view_instance_id > 0 ?
           ipc_sender->render_process_id() : 0;
 
   const Extension* extension =
       extension_info_map()->extensions().GetByID(extension_id_safe());
   std::string extension_name =
       extension ? extension->name() : extension_id_safe();
 
@@ skipping 234 matching lines @@
       base::Bind(&WarningService::NotifyWarningsOnUI, profile_id(), warnings));
 
   // Continue gracefully.
   RunSync();
 }
 
 bool WebRequestHandlerBehaviorChangedFunction::RunSync() {
   helpers::ClearCacheOnNavigation();
   return true;
 }