Change base::TickClock to a ref counted class.

components/copresence/handlers/audio/audio_directive_handler.cc

Index: components/copresence/handlers/audio/audio_directive_handler.cc
diff --git a/components/copresence/handlers/audio/audio_directive_handler.cc b/components/copresence/handlers/audio/audio_directive_handler.cc
index 2c91dddbbf98c3c0ef70e59bb70c95900ca37f5d..c52735631e049cc904f37407087acc45e5e6486c 100644
--- a/components/copresence/handlers/audio/audio_directive_handler.cc
+++ b/components/copresence/handlers/audio/audio_directive_handler.cc
@@ -100,11 +100,25 @@ void AudioDirectiveHandler::RemoveInstructions(const std::string& op_id) {
   ProcessNextInstruction();
 }
 
+void AudioDirectiveHandler::set_clock_for_testing(
+    const scoped_refptr<base::TickClock>& clock) {
+  clock_ = clock;
+
+  transmits_list_[AUDIBLE].set_clock_for_testing(clock);
+  transmits_list_[INAUDIBLE].set_clock_for_testing(clock);
+  receives_list_[AUDIBLE].set_clock_for_testing(clock);
+  receives_list_[INAUDIBLE].set_clock_for_testing(clock);
+}
+
+void AudioDirectiveHandler::set_timer_for_testing(
+    scoped_ptr<base::Timer> timer) {
+  audio_event_timer_.swap(timer);
+}
+
 // Private methods.
 
 void AudioDirectiveHandler::ProcessNextInstruction() {
   DCHECK(audio_event_timer_);
-  LOG(ERROR) << "RKC: Stopping the timer.";
   audio_event_timer_->Stop();
 
   // Change audio_manager_ state for audible transmits.