Decouple input_method from BrowserThread (and content/).

chrome/browser/chromeos/input_method/input_method_delegate_impl.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/input_method_delegate_impl.h"
 
 #include "base/logging.h"
+#include "base/threading/sequenced_worker_pool.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/common/pref_names.h"
+#include "content/public/browser/browser_thread.h"
 
 namespace chromeos {
 namespace input_method {
 
 InputMethodDelegateImpl::InputMethodDelegateImpl() {}
 
 std::string InputMethodDelegateImpl::GetHardwareKeyboardLayout() const {
   if (g_browser_process) {
     PrefServiceBase* local_state = g_browser_process->local_state();
     if (local_state)
       return local_state->GetString(prefs::kHardwareKeyboardLayout);
   }
   // This shouldn't happen but just in case.
   DVLOG(1) << "Local state is not yet ready.";
   return std::string();
 }
 
 std::string InputMethodDelegateImpl::GetActiveLocale() const {
   if (g_browser_process)
     return g_browser_process->GetApplicationLocale();
 
   NOTREACHED();
   return std::string();
 }
 
+scoped_refptr<base::SequencedTaskRunner>
+InputMethodDelegateImpl::GetDefaultTaskRunner() const {
+  return content::BrowserThread::GetMessageLoopProxyForThread(
+      content::BrowserThread::UI);
+}
+
+scoped_refptr<base::SequencedTaskRunner>
+InputMethodDelegateImpl::GetWorkerTaskRunner() const {
+  scoped_refptr<base::SequencedWorkerPool> worker_pool(
+      content::BrowserThread::GetBlockingPool());
+
+  return worker_pool->GetSequencedTaskRunner(worker_pool->GetSequenceToken());
+}
+
 }  // namespace input_method
 }  // namespace chromeos