Revert of Make OS audio buffer size limits visible.

media/audio/audio_manager_unittest.cc

Index: media/audio/audio_manager_unittest.cc
diff --git a/media/audio/audio_manager_unittest.cc b/media/audio/audio_manager_unittest.cc
index db92da8783a8acde1dbacc09f792f27bf1c78c03..904ee12fd9847dffdbf3527025e3a8dd1cb09a87 100644
--- a/media/audio/audio_manager_unittest.cc
+++ b/media/audio/audio_manager_unittest.cc
@@ -26,18 +26,12 @@
 #include "media/audio/fake_audio_log_factory.h"
 #include "media/audio/fake_audio_manager.h"
 #include "media/audio/test_audio_thread.h"
-#include "media/base/limits.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 #if defined(USE_ALSA)
 #include "media/audio/alsa/audio_manager_alsa.h"
 #endif  // defined(USE_ALSA)
-
-#if defined(OS_MACOSX)
-#include "media/audio/mac/audio_manager_mac.h"
-#include "media/base/mac/audio_latency_mac.h"
-#endif
 
 #if defined(OS_WIN)
 #include "base/win/scoped_com_initializer.h"
@@ -683,102 +677,4 @@
   audio_manager_->DisableOutputDebugRecording();
 }
 
-#if defined(OS_MACOSX) || defined(USE_CRAS) || defined(USE_PULSEAUDIO)
-class TestAudioSourceCallback : public AudioOutputStream::AudioSourceCallback {
- public:
-  TestAudioSourceCallback(int expected_frames_per_buffer,
-                          base::WaitableEvent* event)
-      : expected_frames_per_buffer_(expected_frames_per_buffer),
-        event_(event){};
-  ~TestAudioSourceCallback() override{};
-
-  int OnMoreData(base::TimeDelta,
-                 base::TimeTicks,
-                 int,
-                 AudioBus* dest) override {
-    EXPECT_EQ(dest->frames(), expected_frames_per_buffer_);
-    event_->Signal();
-    return 0;
-  }
-
-  void OnError() override { FAIL(); }
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(TestAudioSourceCallback);
-
-  const int expected_frames_per_buffer_;
-  base::WaitableEvent* event_;
-};
-
-// Test that we can create an AudioOutputStream with kMinAudioBufferSize and
-// kMaxAudioBufferSize and that the callback AudioBus is the expected size.
-TEST_F(AudioManagerTest, CheckMinimumAudioBufferSizesCallbacks) {
-  ABORT_AUDIO_TEST_IF_NOT(OutputDevicesAvailable());
-
-#if defined(OS_MACOSX)
-  CreateAudioManagerForTesting<AudioManagerMac>();
-#elif defined(USE_CRAS)
-  CreateAudioManagerForTesting<AudioManagerCras>();
-#elif defined(USE_PULSEAUDIO)
-  CreateAudioManagerForTesting<AudioManagerPulse>();
-#endif
-
-  DCHECK(audio_manager_);
-
-  AudioParameters default_params;
-  GetDefaultOutputStreamParameters(&default_params);
-  ASSERT_LT(default_params.frames_per_buffer(),
-            media::limits::kMaxAudioBufferSize);
-
-#if defined(OS_MACOSX)
-  // On OSX the preferred output buffer size is higher than the minimum
-  // but users may request the minimum size explicitly.
-  ASSERT_GT(default_params.frames_per_buffer(),
-            GetMinAudioBufferSizeMacOS(media::limits::kMinAudioBufferSize,
-                                       default_params.sample_rate()));
-#elif defined(USE_CRAS)
-  // On CRAS the preferred output buffer size varies per board and may be as low
-  // as the minimum for some boards.
-  ASSERT_GE(default_params.frames_per_buffer(),
-            media::limits::kMinAudioBufferSize);
-#elif defined(USE_PULSEAUDIO)
-  ASSERT_EQ(default_params.frames_per_buffer(),
-            media::limits::kMinAudioBufferSize);
-#else
-  NOTREACHED();
-#endif
-
-  AudioOutputStream* stream;
-  base::WaitableEvent event(base::WaitableEvent::ResetPolicy::AUTOMATIC,
-                            base::WaitableEvent::InitialState::NOT_SIGNALED);
-
-  // Create an output stream with the minimum buffer size parameters and ensure
-  // that no errors are returned.
-  AudioParameters min_params = default_params;
-  min_params.set_frames_per_buffer(media::limits::kMinAudioBufferSize);
-  stream = audio_manager_->MakeAudioOutputStreamProxy(min_params, "");
-  ASSERT_TRUE(stream);
-  EXPECT_TRUE(stream->Open());
-  event.Reset();
-  TestAudioSourceCallback min_source(min_params.frames_per_buffer(), &event);
-  stream->Start(&min_source);
-  event.Wait();
-  stream->Stop();
-  stream->Close();
-
-  // Verify the same for the maximum buffer size.
-  AudioParameters max_params = default_params;
-  max_params.set_frames_per_buffer(media::limits::kMaxAudioBufferSize);
-  stream = audio_manager_->MakeAudioOutputStreamProxy(max_params, "");
-  ASSERT_TRUE(stream);
-  EXPECT_TRUE(stream->Open());
-  event.Reset();
-  TestAudioSourceCallback max_source(max_params.frames_per_buffer(), &event);
-  stream->Start(&max_source);
-  event.Wait();
-  stream->Stop();
-  stream->Close();
-}
-#endif
-
 }  // namespace media