Move bit_cast from base/macros.h to its own header

base/time/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 20 matching lines @@
 // will only increase the system-wide timer if we're not running on battery
 // power.
 
 #include "base/time/time.h"
 
 #pragma comment(lib, "winmm.lib")
 #include <windows.h>
 #include <mmsystem.h>
 #include <stdint.h>
 
+#include "base/bit_cast.h"
 #include "base/cpu.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
 #include "base/synchronization/lock.h"
 
 using base::ThreadTicks;
 using base::Time;
 using base::TimeDelta;
 using base::TimeTicks;
 
@@ skipping 555 matching lines @@
 TimeTicks TimeTicks::FromQPCValue(LONGLONG qpc_value) {
   return TimeTicks() + QPCValueToTimeDelta(qpc_value);
 }
 
 // TimeDelta ------------------------------------------------------------------
 
 // static
 TimeDelta TimeDelta::FromQPCValue(LONGLONG qpc_value) {
   return QPCValueToTimeDelta(qpc_value);
 }