Build sync engine as part of the browser build

chrome/browser/sync/util/highres_timer_unittest.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.
 //
 // High resolution timer unit tests.
 
 #include "base/basictypes.h"
+#include "build/build_config.h"
 #include "chrome/browser/sync/util/highres_timer.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 // These unittests have proven to be flaky on buildbot. While we don't want
 // them breaking the build, we still build them to guard against bitrot.
 // On dev machines during local builds we can enable them.
 TEST(HighresTimer, DISABLED_MillisecondClock) {
   HighresTimer timer;
 
   // Note: this could fail if we context switch between initializing the timer
   // and here. Very unlikely however.
   EXPECT_EQ(0, timer.GetElapsedMs());
   timer.Start();
   uint64 half_ms = HighresTimer::GetTimerFrequency() / 2000;
   // Busy wait for half a millisecond.
   while (timer.start_ticks() + half_ms > HighresTimer::GetCurrentTicks()) {
     // Nothing
   }
   EXPECT_EQ(1, timer.GetElapsedMs());
 }
 
 TEST(HighresTimer, DISABLED_SecondClock) {
   HighresTimer timer;
 
   EXPECT_EQ(0, timer.GetElapsedSec());
-#ifdef OS_WINDOWS
+#ifdef OS_WIN
   ::Sleep(250);
 #else
   struct timespec ts1 = {0, 250000000};
   nanosleep(&ts1, 0);
 #endif
   EXPECT_EQ(0, timer.GetElapsedSec());
   EXPECT_LE(230, timer.GetElapsedMs());
   EXPECT_GE(270, timer.GetElapsedMs());
-#ifdef OS_WINDOWS
+#ifdef OS_WIN
   ::Sleep(251);
 #else
   struct timespec ts2 = {0, 251000000};
   nanosleep(&ts2, 0);
 #endif
   EXPECT_EQ(1, timer.GetElapsedSec());
 }