(reland) Adds TimeDomains to the TaskQueueManager

components/scheduler/base/lazy_now.h

 // Copyright 2015 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.
 
 #ifndef COMPONENTS_SCHEDULER_BASE_LAZY_NOW_H_
 #define COMPONENTS_SCHEDULER_BASE_LAZY_NOW_H_
 
 #include "base/time/time.h"
 
 namespace base {
 class TickClock;
 }
 
 namespace scheduler {
-namespace internal {
 
 // Now() is somewhat expensive so it makes sense not to call Now() unless we
 // really need to.
 class LazyNow {
  public:
   explicit LazyNow(base::TimeTicks now) : tick_clock_(nullptr), now_(now) {
     DCHECK(!now.is_null());
   }
 
   explicit LazyNow(base::TickClock* tick_clock) : tick_clock_(tick_clock) {}
 
   base::TimeTicks Now();
 
  private:
   base::TickClock* tick_clock_;  // NOT OWNED
   base::TimeTicks now_;
 };
 
-}  // namespace internal
 }  // namespace scheduler
 
 #endif  // COMPONENTS_SCHEDULER_BASE_LAZY_NOW_H_