Attempt four at landing the "histogram.h removed from message_loop.h" patch.

chrome/browser/idle_win.cc

 // Copyright (c) 2010 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();
 
 IdleState CalculateIdleState(unsigned int idle_threshold) {
   if (IsScreensaverRunning() || IsWorkstationLocked())
     return IDLE_STATE_LOCKED;
 
   LASTINPUTINFO last_input_info = {0};
   last_input_info.cbSize = sizeof(LASTINPUTINFO);
   DWORD current_idle_time = 0;
@@ skipping 28 matching lines @@
       UOI_NAME,
       name,
       sizeof(name),
       &needed)) {
         is_locked = lstrcmpi(name, L"default") != 0;
     }
     ::CloseDesktop(input_desk);
   }
   return is_locked;
 }