Fixing the bug, that caused UI to hang after unsupported device was inserted.

chrome/browser/idle.cc

-// Copyright (c) 2011 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/idle.h"
-
-#include "base/bind.h"
-#include "base/synchronization/waitable_event.h"
-
-
-
-void IdleStateCallback(IdleState* return_state, base::WaitableEvent* done,
-                       IdleState state) {
-  *return_state = state;
-  done->Signal();
-}
-
-IdleState CalculateIdleStateSync(unsigned int idle_threshold) {
-  IdleState return_state;
-  base::WaitableEvent done(true, false);
-  CalculateIdleState(idle_threshold, base::Bind(&IdleStateCallback,
-                                                &return_state, &done));
-  done.Wait();
-  return return_state;
-}