Decouple input_method from BrowserThread (and content/).

chrome/browser/chromeos/input_method/ibus_controller.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 "chrome/browser/chromeos/input_method/ibus_controller.h"
 
 #if defined(HAVE_IBUS)
 #include "chrome/browser/chromeos/input_method/ibus_controller_impl.h"
 #else
 #include "chrome/browser/chromeos/input_method/mock_ibus_controller.h"
 #endif
 
 namespace chromeos {
 namespace input_method {
 
 IBusController::~IBusController() {
 }
 
 // static
-IBusController* IBusController::Create() {
+IBusController* IBusController::Create(
+    const scoped_refptr<base::SequencedTaskRunner>& default_task_runner,
+    const scoped_refptr<base::SequencedTaskRunner>& worker_task_runner) {
 #if defined(HAVE_IBUS)
-  return new IBusControllerImpl;
+  return new IBusControllerImpl(default_task_runner, worker_task_runner);
 #else
   return new MockIBusController;
 #endif
 }
 
 }  // namespace input_method
 }  // namespace chromeos