Added volume adjust sound behind the flag.

media/audio/sounds/test_data.cc

Index: media/audio/sounds/test_data.cc
diff --git a/media/audio/sounds/test_data.cc b/media/audio/sounds/test_data.cc
index dc667c9996d567bed9418ec29edc82394722d933..a233be1e23d5ceda2ed623585be33a395916e6dc 100644
--- a/media/audio/sounds/test_data.cc
+++ b/media/audio/sounds/test_data.cc
@@ -13,18 +13,22 @@ TestObserver::TestObserver(const base::Closure& quit)
     : loop_(base::MessageLoop::current()),
       quit_(quit),
       num_play_requests_(0),
+      num_replays_(0),
       num_stop_requests_(0),
       cursor_(0) {
   DCHECK(loop_);
 }
 
-TestObserver::~TestObserver() {
-}
+TestObserver::~TestObserver() {}
 
 void TestObserver::OnPlay() {
   ++num_play_requests_;
 }
 
+void TestObserver::OnReplay() {
+  ++num_replays_;
+}
+
 void TestObserver::OnStop(size_t cursor) {
   ++num_stop_requests_;
   cursor_ = cursor;