Fix black background when locking with fullscreen window:

base/time_win.cc

 // Copyright (c) 2012 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.
 
 
 // Windows Timer Primer
 //
 // A good article:  http://www.ddj.com/windows/184416651
 // A good mozilla bug:  http://bugzilla.mozilla.org/show_bug.cgi?id=363258
 //
@@ skipping 85 matching lines @@
 // number of leap year days between 1601 and 1970: (1970-1601)/4 excluding
 // 1700, 1800, and 1900.
 // static
 const int64 Time::kTimeTToMicrosecondsOffset = GG_INT64_C(11644473600000000);
 
 bool Time::high_resolution_timer_enabled_ = false;
 int Time::high_resolution_timer_activated_ = 0;
 
 // static
 Time Time::Now() {
+  if (TimeFactory::instance())
+    return TimeFactory::instance()->TimeNow();
+
   if (initial_time == 0)
     InitializeClock();
 
   // We implement time using the high-resolution timers so that we can get
   // timeouts which are smaller than 10-15ms.  If we just used
   // CurrentWallclockMicroseconds(), we'd have the less-granular timer.
   //
   // To make this work, we initialize the clock (initial_time) and the
   // counter (initial_ctr).  To compute the initial time, we can check
   // the number of ticks that have elapsed, and compute the delta.
@@ skipping 328 matching lines @@
 // static
 TimeTicks::TickFunctionType TimeTicks::SetMockTickFunction(
     TickFunctionType ticker) {
   TickFunctionType old = tick_function;
   tick_function = ticker;
   return old;
 }
 
 // static
 TimeTicks TimeTicks::Now() {
+  if (TimeFactory::instance())
+    return TimeFactory::instance()->TimeTicksNow();
+
   return TimeTicks() + RolloverProtectedNow();
 }
 
 // static
 TimeTicks TimeTicks::HighResNow() {
+  if (TimeFactory::instance())
+    return TimeFactory::instance()->TimeTicksHighResNow();
+
   return TimeTicks() + HighResNowSingleton::GetInstance()->Now();
 }
 
 // static
 TimeTicks TimeTicks::NowFromSystemTraceTime() {
   return HighResNow();
 }
 
 // static
 int64 TimeTicks::GetQPCDriftMicroseconds() {
@@ skipping 11 matching lines @@
   return HighResNowSingleton::GetInstance()->IsUsingHighResClock();
 }
 
 // TimeDelta ------------------------------------------------------------------
 
 // static
 TimeDelta TimeDelta::FromQPCValue(LONGLONG qpc_value) {
   return TimeDelta(
       HighResNowSingleton::GetInstance()->QPCValueToMicroseconds(qpc_value));
 }