Build sync engine as part of the browser build

chrome/browser/sync/engine/syncer_thread.cc

 // Copyright (c) 2009 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/sync/engine/syncer_thread.h"
 
+#include "build/build_config.h"
+
 #ifdef OS_MACOSX
 #include <CoreFoundation/CFNumber.h>
 #include <IOKit/IOTypes.h>
 #include <IOKit/IOKitLib.h>
 #endif
 
 #include <algorithm>
 #include <map>
 #include <queue>
 
@@ skipping 10 matching lines @@
 
 static inline bool operator < (const timespec& a, const timespec& b) {
   return a.tv_sec == b.tv_sec ? a.tv_nsec < b.tv_nsec : a.tv_sec < b.tv_sec;
 }
 
 namespace {
 
 // Returns the amount of time since the user last interacted with the computer,
 // in milliseconds
 int UserIdleTime() {
-#ifdef OS_WINDOWS
+#ifdef OS_WIN
   LASTINPUTINFO last_input_info;
   last_input_info.cbSize = sizeof(LASTINPUTINFO);
 
   // Get time in windows ticks since system start of last activity.
   BOOL b = ::GetLastInputInfo(&last_input_info);
   if (b == TRUE)
     return ::GetTickCount() - last_input_info.dwTime;
 #elif defined(OS_MACOSX)
   // It would be great to do something like:
   //
@@ skipping 500 matching lines @@
     default:
       break;
   }
 
   if (NULL != syncer_) {
     syncer_->set_notifications_enabled(p2p_authenticated_ && p2p_subscribed_);
   }
 }
 
 }  // namespace browser_sync