media::SilentSinkSuspender should simulate |delay| and |delay_timestamp|

media/base/audio_bus_perftest.cc

Index: media/base/audio_bus_perftest.cc
diff --git a/media/base/audio_bus_perftest.cc b/media/base/audio_bus_perftest.cc
index fd882d74b5816f071d900cd90eb70edbe88e279e..db8e47dfc0cf1e5c3c5799c69d69be469cdb254d 100644
--- a/media/base/audio_bus_perftest.cc
+++ b/media/base/audio_bus_perftest.cc
@@ -14,6 +14,7 @@
 namespace media {
 
 static const int kBenchmarkIterations = 20;
+static const int kSampleRate = 48000;
 
 template <typename T>
 void RunInterleaveBench(AudioBus* bus, const std::string& trace_name) {
@@ -44,8 +45,8 @@ void RunInterleaveBench(AudioBus* bus, const std::string& trace_name) {
 
 // Benchmark the FromInterleaved() and ToInterleaved() methods.
 TEST(AudioBusPerfTest, Interleave) {
-  std::unique_ptr<AudioBus> bus = AudioBus::Create(2, 48000 * 120);
-  FakeAudioRenderCallback callback(0.2);
+  std::unique_ptr<AudioBus> bus = AudioBus::Create(2, kSampleRate * 120);
+  FakeAudioRenderCallback callback(0.2, kSampleRate);
   callback.Render(base::TimeDelta(), base::TimeTicks::Now(), 0, bus.get());
 
   RunInterleaveBench<int8_t>(bus.get(), "int8_t");