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

content/renderer/media/html_audio_element_capturer_source_unittest.cc

 // Copyright 2016 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 "base/memory/weak_ptr.h"
 #include "base/run_loop.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "content/public/renderer/media_stream_audio_sink.h"
 #include "content/renderer/media/html_audio_element_capturer_source.h"
 #include "content/renderer/media/media_stream_audio_track.h"
@@ skipping 47 matching lines @@
 //  and inject audio.
 // - a WebMediaStreamSource, that owns the HTMLAudioElementCapturerSource under
 //  test, and a WebMediaStreamAudioTrack, that the class under test needs to
 //  connect to in order to operate correctly. This class has an inner content
 //  MediaStreamAudioTrack.
 // - finally, a MockMediaStreamAudioSink to observe captured audio frames, and
 //  that plugs into the former MediaStreamAudioTrack.
 class HTMLAudioElementCapturerSourceTest : public testing::Test {
  public:
   HTMLAudioElementCapturerSourceTest()
-      : fake_callback_(0.1),
+      : fake_callback_(0.1, kAudioTrackSampleRate),
         audio_source_(new media::WebAudioSourceProviderImpl(
             new media::NullAudioSink(base::ThreadTaskRunnerHandle::Get()),
             new media::MediaLog())) {}
 
   void SetUp() final {
     const media::AudioParameters params(
         media::AudioParameters::AUDIO_PCM_LOW_LATENCY,
         media::GuessChannelLayout(kNumChannelsForTest),
         kAudioTrackSampleRate /* sample_rate */, 16 /* bits_per_sample */,
         kAudioTrackSamplesPerBuffer /* frames_per_buffer */);
@@ skipping 68 matching lines @@
   std::unique_ptr<media::AudioBus> bus = media::AudioBus::Create(
       kNumChannelsForTest, kAudioTrackSamplesPerBuffer);
   InjectAudio(bus.get());
   run_loop.Run();
 
   track()->Stop();
   track()->RemoveSink(&sink);
 }
 
 }  // namespace content