Add AudioDirectiveHandler timed tests.

components/copresence/handlers/audio/tick_clock_ref_counted.cc

Index: components/copresence/handlers/audio/tick_clock_ref_counted.cc
diff --git a/components/copresence/handlers/audio/tick_clock_ref_counted.cc b/components/copresence/handlers/audio/tick_clock_ref_counted.cc
new file mode 100644
index 0000000000000000000000000000000000000000..791c1966dda69e21d8522bfcdaf9e04b642996b3
--- /dev/null
+++ b/components/copresence/handlers/audio/tick_clock_ref_counted.cc
@@ -0,0 +1,20 @@
+// Copyright 2014 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.
+
+#include "components/copresence/handlers/audio/tick_clock_ref_counted.h"
+
+#include "base/time/tick_clock.h"
+
+namespace copresence {
+
+TickClockRefCounted::TickClockRefCounted(base::TickClock* clock)
+    : clock_(clock) {
+}
+base::TimeTicks TickClockRefCounted::NowTicks() {
+  return clock_->NowTicks();
+}
+TickClockRefCounted::~TickClockRefCounted() {
+}
+
+}  // namespace copresence