Move timing files into base/time, install forwarding headers.

base/timer/timer.h

 // 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.
 
 // OneShotTimer and RepeatingTimer provide a simple timer API.  As the names
 // suggest, OneShotTimer calls you back once after a time delay expires.
 // RepeatingTimer on the other hand calls you back periodically with the
 // prescribed time interval.
 //
 // OneShotTimer and RepeatingTimer both cancel the timer when they go out of
@@ skipping 23 matching lines @@
 //
 // Both OneShotTimer and RepeatingTimer also support a Reset method, which
 // allows you to easily defer the timer event until the timer delay passes once
 // again.  So, in the above example, if 0.5 seconds have already passed,
 // calling Reset on timer_ would postpone DoStuff by another 1 second.  In
 // other words, Reset is shorthand for calling Stop and then Start again with
 // the same arguments.
 //
 // NOTE: These APIs are not thread safe. Always call from the same thread.
 
-#ifndef BASE_TIMER_H_
-#define BASE_TIMER_H_
+#ifndef BASE_TIMER_TIMER_H_
+#define BASE_TIMER_TIMER_H_
 
 // IMPORTANT: If you change timer code, make sure that all tests (including
 // disabled ones) from timer_unittests.cc pass locally. Some are disabled
 // because they're flaky on the buildbot, but when you run them locally you
 // should be able to tell the difference.
 
 #include "base/base_export.h"
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/callback.h"
 #include "base/location.h"
-#include "base/time.h"
+#include "base/time/time.h"
 
 namespace base {
 
 class BaseTimerTaskInternal;
 class MessageLoop;
 
 //-----------------------------------------------------------------------------
 // This class wraps MessageLoop::PostDelayedTask to manage delayed and repeating
 // tasks. It must be destructed on the same thread that starts tasks. There are
 // DCHECKs in place to verify this.
@@ skipping 168 matching lines @@
              ReceiverMethod method)
       : Timer(posted_from, delay,
               base::Bind(method, base::Unretained(receiver)),
               false) {}
 
   void Reset() { Timer::Reset(); }
 };
 
 }  // namespace base
 
-#endif  // BASE_TIMER_H_
+#endif  // BASE_TIMER_TIMER_H_