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

chrome/browser/idle_win.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 <limits.h>
 #include <windows.h>
 
 static bool IsScreensaverRunning();
 static bool IsWorkstationLocked();
 
 void CalculateIdleState(unsigned int idle_threshold, IdleCallback notify) {
-  if (IsScreensaverRunning() || IsWorkstationLocked()) {
+  if (CheckIdleStateIsLocked()) {
     notify.Run(IDLE_STATE_LOCKED);
     return;
   }
 
   LASTINPUTINFO last_input_info = {0};
   last_input_info.cbSize = sizeof(LASTINPUTINFO);
   DWORD current_idle_time = 0;
   if (::GetLastInputInfo(&last_input_info)) {
     DWORD now = ::GetTickCount();
     if (now < last_input_info.dwTime) {
@@ skipping 35 matching lines @@
       UOI_NAME,
       name,
       sizeof(name),
       &needed)) {
         is_locked = lstrcmpi(name, L"default") != 0;
     }
     ::CloseDesktop(input_desk);
   }
   return is_locked;
 }
+
+bool CheckIdleStateIsLocked() {
+  return IsWorkstationLocked() || IsScreensaverRunning();
+}