components/copresence/handlers/audio/tick_clock_ref_counted.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef COMPONENTS_COPRESENCE_HANDLERS_AUDIO_TICK_CLOCK_REF_COUNTED_H_
   6 #define COMPONENTS_COPRESENCE_HANDLERS_AUDIO_TICK_CLOCK_REF_COUNTED_H_
   7
   8 #include "base/macros.h"
   9 #include "base/memory/ref_counted.h"
  10 #include "base/memory/scoped_ptr.h"
  11
  12 namespace base {
  13 class TickClock;
  14 class TimeTicks;
  15 }
  16
  17 namespace copresence {
  18
  19 class TickClockRefCounted
  20     : public base::RefCountedThreadSafe<TickClockRefCounted> {
  21  public:
  22   explicit TickClockRefCounted(scoped_ptr<base::TickClock> clock);
  23
  24   // Takes ownership of the clock.
  25   explicit TickClockRefCounted(base::TickClock* clock);
  26
  27   base::TimeTicks NowTicks() const;
  28
  29  private:
  30   friend class base::RefCountedThreadSafe<TickClockRefCounted>;
  31   virtual ~TickClockRefCounted();
  32
  33   scoped_ptr<base::TickClock> clock_;
  34
  35   DISALLOW_COPY_AND_ASSIGN(TickClockRefCounted);
  36 };
  37
  38 }  // namespace copresence
  39
  40 #endif  // COMPONENTS_COPRESENCE_HANDLERS_AUDIO_TICK_CLOCK_REF_COUNTED_H_