Remove an unused OnClose() method from AudioInputCallback.

BUG=328357

Review URL: https://codereview.chromium.org/107093010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@241703 0039d316-1c4b-4281-b951-d872f2087c98

22 files changed, 27 insertions, 115 deletions

diff --git a/content/browser/renderer_host/media/web_contents_audio_input_stream_unittest.cc b/content/browser/renderer_host/media/web_contents_audio_input_stream_unittest.cc
index 3ce336d..4a782aa 100644
--- a/content/browser/renderer_host/media/web_contents_audio_input_stream_unittest.cc
+++ b/content/browser/renderer_host/media/web_contents_audio_input_stream_unittest.cc
@@ -164,7 +164,6 @@ class MockAudioInputCallback : public AudioInputStream::AudioInputCallback {
   MOCK_METHOD5(OnData, void(AudioInputStream* stream, const uint8* src,
                             uint32 size, uint32 hardware_delay_bytes,
                             double volume));
-  MOCK_METHOD1(OnClose, void(AudioInputStream* stream));
   MOCK_METHOD1(OnError, void(AudioInputStream* stream));
 
  private:
@@ -242,7 +241,6 @@ class WebContentsAudioInputStreamTest : public testing::Test {
     EXPECT_CALL(mock_input_callback_, OnData(NotNull(), NotNull(), _, _, _))
         .WillRepeatedly(
             InvokeWithoutArgs(&on_data_event_, &base::WaitableEvent::Signal));
-    EXPECT_CALL(mock_input_callback_, OnClose(_));  // At Stop() time.
 
     wcais_->Start(&mock_input_callback_);
 
diff --git a/media/audio/alsa/alsa_input.cc b/media/audio/alsa/alsa_input.cc
index 9dcbf2b..bf31f51 100644
--- a/media/audio/alsa/alsa_input.cc
+++ b/media/audio/alsa/alsa_input.cc
@@ -245,6 +245,8 @@ void AlsaPcmInputStream::Stop() {
   int error = wrapper_->PcmDrop(device_handle_);
   if (error < 0)
     HandleError("PcmDrop", error);
+
+  callback_ = NULL;
 }
 
 void AlsaPcmInputStream::Close() {
@@ -261,9 +263,6 @@ void AlsaPcmInputStream::Close() {
     device_handle_ = NULL;
     mixer_handle_ = NULL;
     mixer_element_handle_ = NULL;
-
-    if (callback_)
-      callback_->OnClose(this);
   }
 
   audio_manager_->ReleaseInputStream(this);
diff --git a/media/audio/android/audio_android_unittest.cc b/media/audio/android/audio_android_unittest.cc
index 8f453c6..1e181f4 100644
--- a/media/audio/android/audio_android_unittest.cc
+++ b/media/audio/android/audio_android_unittest.cc
@@ -146,7 +146,6 @@ class MockAudioInputCallback : public AudioInputStream::AudioInputCallback {
                     uint32 size,
                     uint32 hardware_delay_bytes,
                     double volume));
-  MOCK_METHOD1(OnClose, void(AudioInputStream* stream));
   MOCK_METHOD1(OnError, void(AudioInputStream* stream));
 };
 
@@ -293,7 +292,6 @@ class FileAudioSink : public AudioInputStream::AudioInputCallback {
       event_->Signal();
   }
 
-  virtual void OnClose(AudioInputStream* stream) OVERRIDE {}
   virtual void OnError(AudioInputStream* stream) OVERRIDE {}
 
  private:
@@ -359,7 +357,6 @@ class FullDuplexAudioSinkSource
     }
   }
 
-  virtual void OnClose(AudioInputStream* stream) OVERRIDE {}
   virtual void OnError(AudioInputStream* stream) OVERRIDE {}
 
   // AudioOutputStream::AudioSourceCallback implementation
@@ -549,7 +546,6 @@ class AudioAndroidInputTest : public AudioAndroidOutputTest,
         .WillRepeatedly(
              CheckCountAndPostQuitTask(&count, num_callbacks, loop()));
     EXPECT_CALL(sink, OnError(stream)).Times(0);
-    EXPECT_CALL(sink, OnClose(stream)).Times(1);
 
     EXPECT_TRUE(stream->Open());
     stream->Start(&sink);
diff --git a/media/audio/android/audio_record_input.cc b/media/audio/android/audio_record_input.cc
index 15a0c3d..583239d 100644
--- a/media/audio/android/audio_record_input.cc
+++ b/media/audio/android/audio_record_input.cc
@@ -90,8 +90,7 @@ void AudioRecordInputStream::Stop() {
       base::android::AttachCurrentThread(), j_audio_record_.obj());
 
   // The Java thread must have been stopped at this point, so we are free to
-  // set |callback_|.
-  callback_->OnClose(this);
+  // clear |callback_|.
   callback_ = NULL;
 }
 
diff --git a/media/audio/android/opensles_input.cc b/media/audio/android/opensles_input.cc
index e51ba4f..b927edb 100644
--- a/media/audio/android/opensles_input.cc
+++ b/media/audio/android/opensles_input.cc
@@ -132,6 +132,7 @@ void OpenSLESInputStream::Stop() {
       (*simple_buffer_queue_)->Clear(simple_buffer_queue_));
 
   started_ = false;
+  callback_ = NULL;
 }
 
 void OpenSLESInputStream::Close() {
@@ -141,15 +142,9 @@ void OpenSLESInputStream::Close() {
   // Stop the stream if it is still recording.
   Stop();
   {
+    // TODO(henrika): Do we need to hold the lock here?
     base::AutoLock lock(lock_);
 
-    // TODO(henrika): we use |callback_| in Close() but |callback_| is set
-    // in Start(). Hence, it should be cleared in Stop() and not used here.
-    if (callback_) {
-      callback_->OnClose(this);
-      callback_ = NULL;
-    }
-
     // Destroy the buffer queue recorder object and invalidate all associated
     // interfaces.
     recorder_object_.Reset();
diff --git a/media/audio/audio_input_controller.cc b/media/audio/audio_input_controller.cc
index ef94d12..1f008b4 100644
--- a/media/audio/audio_input_controller.cc
+++ b/media/audio/audio_input_controller.cc
@@ -360,13 +360,6 @@ void AudioInputController::OnData(AudioInputStream* stream,
   handler_->OnData(this, data, size);
 }
 
-void AudioInputController::OnClose(AudioInputStream* stream) {
-  DVLOG(1) << "AudioInputController::OnClose()";
-  // TODO(satish): Sometimes the device driver closes the input stream without
-  // us asking for it (may be if the device was unplugged?). Check how to handle
-  // such cases here.
-}
-
 void AudioInputController::OnError(AudioInputStream* stream) {
   // Handle error on the audio-manager thread.
   message_loop_->PostTask(FROM_HERE, base::Bind(
diff --git a/media/audio/audio_input_controller.h b/media/audio/audio_input_controller.h
index 6b40459..3ca87c4 100644
--- a/media/audio/audio_input_controller.h
+++ b/media/audio/audio_input_controller.h
@@ -198,7 +198,6 @@ class MEDIA_EXPORT AudioInputController
   // device-specific implementation.
   virtual void OnData(AudioInputStream* stream, const uint8* src, uint32 size,
                       uint32 hardware_delay_bytes, double volume) OVERRIDE;
-  virtual void OnClose(AudioInputStream* stream) OVERRIDE;
   virtual void OnError(AudioInputStream* stream) OVERRIDE;
 
   bool LowLatencyMode() const { return sync_writer_ != NULL; }
@@ -256,8 +255,8 @@ class MEDIA_EXPORT AudioInputController
   AudioInputStream* stream_;
 
   // |no_data_timer_| is used to call OnError() when we stop receiving
-  // OnData() calls without an OnClose() call. This can occur
-  // when an audio input device is unplugged whilst recording on Windows.
+  // OnData() calls. This can occur when an audio input device is unplugged
+  // whilst recording on Windows.
   // See http://crbug.com/79936 for details.
   // This member is only touched by the audio thread.
   scoped_ptr<base::Timer> no_data_timer_;
diff --git a/media/audio/audio_input_controller_unittest.cc b/media/audio/audio_input_controller_unittest.cc
index a7bb600..f95615c 100644
--- a/media/audio/audio_input_controller_unittest.cc
+++ b/media/audio/audio_input_controller_unittest.cc
@@ -142,8 +142,8 @@ TEST_F(AudioInputControllerTest, RecordAndClose) {
 }
 
 // Test that the AudioInputController reports an error when the input stream
-// stops without an OnClose() callback. This can happen when the underlying
-// audio layer stops feeding data as a result of a removed microphone device.
+// stops. This can happen when the underlying audio layer stops feeding data as
+// a result of a removed microphone device.
 TEST_F(AudioInputControllerTest, RecordAndError) {
   MockAudioInputControllerEventHandler event_handler;
   int count = 0;
diff --git a/media/audio/audio_input_unittest.cc b/media/audio/audio_input_unittest.cc
index 838cab3..eb15b34 100644
--- a/media/audio/audio_input_unittest.cc
+++ b/media/audio/audio_input_unittest.cc
@@ -38,7 +38,6 @@ class TestInputCallback : public AudioInputStream::AudioInputCallback {
       EXPECT_GE(value, 0);
     }
   }
-  virtual void OnClose(AudioInputStream* stream) OVERRIDE {}
   virtual void OnError(AudioInputStream* stream) OVERRIDE {
     ++had_error_;
   }
diff --git a/media/audio/audio_io.h b/media/audio/audio_io.h
index 473af0d..db31902 100644
--- a/media/audio/audio_io.h
+++ b/media/audio/audio_io.h
@@ -117,10 +117,6 @@ class MEDIA_EXPORT AudioInputStream {
                         uint32 size, uint32 hardware_delay_bytes,
                         double volume) = 0;
 
-    // The stream is done with this callback, the last call received by this
-    // audio sink.
-    virtual void OnClose(AudioInputStream* stream) = 0;
-
     // There was an error while recording audio. The audio sink cannot be
     // destroyed yet. No direct action needed by the AudioInputStream, but it
     // is a good place to stop accumulating sound data since is is likely that
diff --git a/media/audio/audio_low_latency_input_output_unittest.cc b/media/audio/audio_low_latency_input_output_unittest.cc
index c0cfa69..033988f 100644
--- a/media/audio/audio_low_latency_input_output_unittest.cc
+++ b/media/audio/audio_low_latency_input_output_unittest.cc
@@ -214,7 +214,6 @@ class FullDuplexAudioSinkSource
     }
   }
 
-  virtual void OnClose(AudioInputStream* stream) OVERRIDE {}
   virtual void OnError(AudioInputStream* stream) OVERRIDE {}
 
   // AudioOutputStream::AudioSourceCallback.
diff --git a/media/audio/cras/cras_input.cc b/media/audio/cras/cras_input.cc
index c41f364..2c4c6a7 100644
--- a/media/audio/cras/cras_input.cc
+++ b/media/audio/cras/cras_input.cc
@@ -86,17 +86,14 @@ bool CrasInputStream::Open() {
 }
 
 void CrasInputStream::Close() {
+  Stop();
+
   if (client_) {
     cras_client_stop(client_);
     cras_client_destroy(client_);
     client_ = NULL;
   }
 
-  if (callback_) {
-    callback_->OnClose(this);
-    callback_ = NULL;
-  }
-
   // Signal to the manager that we're closed and can be removed.
   // Should be last call in the method as it deletes "this".
   audio_manager_->ReleaseInputStream(this);
@@ -177,6 +174,7 @@ void CrasInputStream::Stop() {
   cras_client_rm_stream(client_, stream_id_);
 
   started_ = false;
+  callback_ = NULL;
 }
 
 // Static callback asking for samples.  Run on high priority thread.
diff --git a/media/audio/cras/cras_input_unittest.cc b/media/audio/cras/cras_input_unittest.cc
index 27ea985..8f17c79 100644
--- a/media/audio/cras/cras_input_unittest.cc
+++ b/media/audio/cras/cras_input_unittest.cc
@@ -27,7 +27,6 @@ class MockAudioInputCallback : public AudioInputStream::AudioInputCallback {
   MOCK_METHOD5(OnData, void(
       AudioInputStream*, const uint8*, uint32, uint32, double));
   MOCK_METHOD1(OnError, void(AudioInputStream*));
-  MOCK_METHOD1(OnClose, void(AudioInputStream*));
 };
 
 class MockAudioManagerCrasInput : public AudioManagerCras {
@@ -93,8 +92,6 @@ class CrasInputStreamTest : public testing::Test {
     EXPECT_TRUE(event.TimedWait(TestTimeouts::action_timeout()));
 
     test_stream->Stop();
-
-    EXPECT_CALL(mock_callback, OnClose(test_stream)).Times(1);
     test_stream->Close();
   }
 
diff --git a/media/audio/fake_audio_input_stream.cc b/media/audio/fake_audio_input_stream.cc
index a00a9b6..5ec09a4 100644
--- a/media/audio/fake_audio_input_stream.cc
+++ b/media/audio/fake_audio_input_stream.cc
@@ -65,6 +65,7 @@ bool FakeAudioInputStream::Open() {
 
 void FakeAudioInputStream::Start(AudioInputCallback* callback)  {
   DCHECK(!thread_.IsRunning());
+  DCHECK(!callback_);
   callback_ = callback;
   last_callback_time_ = TimeTicks::Now();
   thread_.Start();
@@ -133,13 +134,10 @@ void FakeAudioInputStream::DoCallback() {
 
 void FakeAudioInputStream::Stop() {
   thread_.Stop();
+  callback_ = NULL;
 }
 
 void FakeAudioInputStream::Close() {
-  if (callback_) {
-    callback_->OnClose(this);
-    callback_ = NULL;
-  }
   audio_manager_->ReleaseInputStream(this);
 }
 
diff --git a/media/audio/mac/audio_input_mac.cc b/media/audio/mac/audio_input_mac.cc
index 4aee117..8f98eed 100644
--- a/media/audio/mac/audio_input_mac.cc
+++ b/media/audio/mac/audio_input_mac.cc
@@ -85,9 +85,12 @@ void PCMQueueInAudioInputStream::Stop() {
     HandleError(err);
 
   started_ = false;
+  callback_ = NULL;
 }
 
 void PCMQueueInAudioInputStream::Close() {
+  Stop();
+
   // It is valid to call Close() before calling Open() or Start(), thus
   // |audio_queue_| and |callback_| might be NULL.
   if (audio_queue_) {
@@ -96,10 +99,7 @@ void PCMQueueInAudioInputStream::Close() {
     if (err != noErr)
       HandleError(err);
   }
-  if (callback_) {
-    callback_->OnClose(this);
-    callback_ = NULL;
-  }
+
   manager_->ReleaseInputStream(this);
   // CARE: This object may now be destroyed.
 }
diff --git a/media/audio/mac/audio_low_latency_input_mac.cc b/media/audio/mac/audio_low_latency_input_mac.cc
index dbc75bf..5623bce 100644
--- a/media/audio/mac/audio_low_latency_input_mac.cc
+++ b/media/audio/mac/audio_low_latency_input_mac.cc
@@ -289,9 +289,10 @@ void AUAudioInputStream::Stop() {
     return;
   StopAgc();
   OSStatus result = AudioOutputUnitStop(audio_unit_);
-  if (result == noErr) {
-    started_ = false;
-  }
+  DCHECK_EQ(result, noErr);
+  started_ = false;
+  sink_ = NULL;
+
   OSSTATUS_DLOG_IF(ERROR, result != noErr, result)
       << "Failed to stop acquiring data";
 }
@@ -310,10 +311,6 @@ void AUAudioInputStream::Close() {
     CloseComponent(audio_unit_);
     audio_unit_ = 0;
   }
-  if (sink_) {
-    sink_->OnClose(this);
-    sink_ = NULL;
-  }
 
   // Inform the audio manager that we have been closed. This can cause our
   // destruction.
diff --git a/media/audio/mac/audio_low_latency_input_mac_unittest.cc b/media/audio/mac/audio_low_latency_input_mac_unittest.cc
index 9360bef..e80cbcd 100644
--- a/media/audio/mac/audio_low_latency_input_mac_unittest.cc
+++ b/media/audio/mac/audio_low_latency_input_mac_unittest.cc
@@ -33,7 +33,6 @@ class MockAudioInputCallback : public AudioInputStream::AudioInputCallback {
   MOCK_METHOD5(OnData, void(AudioInputStream* stream,
                             const uint8* src, uint32 size,
                             uint32 hardware_delay_bytes, double volume));
-  MOCK_METHOD1(OnClose, void(AudioInputStream* stream));
   MOCK_METHOD1(OnError, void(AudioInputStream* stream));
 };
 
@@ -84,7 +83,6 @@ class WriteToFileAudioSink : public AudioInputStream::AudioInputCallback {
     }
   }
 
-  virtual void OnClose(AudioInputStream* stream) OVERRIDE {}
   virtual void OnError(AudioInputStream* stream) OVERRIDE {}
 
  private:
@@ -162,8 +160,6 @@ TEST_F(MacAudioInputTest, AUAudioInputStreamOpenStartAndClose) {
   EXPECT_TRUE(ais->Open());
   MockAudioInputCallback sink;
   ais->Start(&sink);
-  EXPECT_CALL(sink, OnClose(ais))
-      .Times(1);
   ais->Close();
 }
 
@@ -176,8 +172,6 @@ TEST_F(MacAudioInputTest, AUAudioInputStreamOpenStartStopAndClose) {
   MockAudioInputCallback sink;
   ais->Start(&sink);
   ais->Stop();
-  EXPECT_CALL(sink, OnClose(ais))
-      .Times(1);
   ais->Close();
 }
 
@@ -206,8 +200,6 @@ TEST_F(MacAudioInputTest, AUAudioInputStreamMiscCallingSequences) {
   ais->Stop();
   EXPECT_FALSE(auais->started());
 
-  EXPECT_CALL(sink, OnClose(ais))
-      .Times(1);
   ais->Close();
 }
 
@@ -239,10 +231,6 @@ TEST_F(MacAudioInputTest, AUAudioInputStreamVerifyMonoRecording) {
   ais->Start(&sink);
   loop.Run();
   ais->Stop();
-
-  // Verify that the sink receieves OnClose() call when calling Close().
-  EXPECT_CALL(sink, OnClose(ais))
-      .Times(1);
   ais->Close();
 }
 
@@ -281,10 +269,6 @@ TEST_F(MacAudioInputTest, AUAudioInputStreamVerifyStereoRecording) {
   ais->Start(&sink);
   loop.Run();
   ais->Stop();
-
-  // Verify that the sink receieves OnClose() call when calling Close().
-  EXPECT_CALL(sink, OnClose(ais))
-      .Times(1);
   ais->Close();
 }
 
diff --git a/media/audio/pulse/pulse_input.cc b/media/audio/pulse/pulse_input.cc
index 54dfc1e..9d31cdd 100644
--- a/media/audio/pulse/pulse_input.cc
+++ b/media/audio/pulse/pulse_input.cc
@@ -105,6 +105,7 @@ void PulseAudioInputStream::Stop() {
   operation = pa_stream_cork(handle_, 1, &pulse::StreamSuccessCallback,
                              pa_mainloop_);
   WaitForOperationCompletion(pa_mainloop_, operation);
+  callback_ = NULL;
 }
 
 void PulseAudioInputStream::Close() {
@@ -125,9 +126,6 @@ void PulseAudioInputStream::Close() {
     }
   }
 
-  if (callback_)
-    callback_->OnClose(this);
-
   // Signal to the manager that we're closed and can be removed.
   // This should be the last call in the function as it deletes "this".
   audio_manager_->ReleaseInputStream(this);
diff --git a/media/audio/virtual_audio_input_stream.cc b/media/audio/virtual_audio_input_stream.cc
index 9c4e7a1..91b9f992 100644
--- a/media/audio/virtual_audio_input_stream.cc
+++ b/media/audio/virtual_audio_input_stream.cc
@@ -97,6 +97,7 @@ void VirtualAudioInputStream::Start(AudioInputCallback* callback) {
 void VirtualAudioInputStream::Stop() {
   DCHECK(thread_checker_.CalledOnValidThread());
   fake_consumer_.Stop();
+  callback_ = NULL;
 }
 
 void VirtualAudioInputStream::AddOutputStream(
@@ -134,7 +135,6 @@ void VirtualAudioInputStream::RemoveOutputStream(
 
 void VirtualAudioInputStream::PumpAudio(AudioBus* audio_bus) {
   DCHECK(worker_loop_->BelongsToCurrentThread());
-  DCHECK(callback_);
 
   {
     base::AutoLock scoped_lock(converter_network_lock_);
@@ -154,10 +154,6 @@ void VirtualAudioInputStream::Close() {
   DCHECK(thread_checker_.CalledOnValidThread());
 
   Stop();  // Make sure callback_ is no longer being used.
-  if (callback_) {
-    callback_->OnClose(this);
-    callback_ = NULL;
-  }
 
   // If a non-null AfterCloseCallback was provided to the constructor, invoke it
   // here.  The callback is moved to a stack-local first since |this| could be
diff --git a/media/audio/virtual_audio_input_stream_unittest.cc b/media/audio/virtual_audio_input_stream_unittest.cc
index aab67cc..8c792d5 100644
--- a/media/audio/virtual_audio_input_stream_unittest.cc
+++ b/media/audio/virtual_audio_input_stream_unittest.cc
@@ -43,7 +43,6 @@ class MockInputCallback : public AudioInputStream::AudioInputCallback {
   MOCK_METHOD5(OnData, void(AudioInputStream* stream, const uint8* data,
                             uint32 size, uint32 hardware_delay_bytes,
                             double volume));
-  MOCK_METHOD1(OnClose, void(AudioInputStream* stream));
   MOCK_METHOD1(OnError, void(AudioInputStream* stream));
 
   void WaitForDataPushes() {
@@ -124,7 +123,6 @@ class VirtualAudioInputStreamTest : public testing::TestWithParam<bool> {
   }
 
   void Start() {
-    EXPECT_CALL(input_callback_, OnClose(_));
     EXPECT_CALL(input_callback_, OnData(_, NotNull(), _, _, _))
         .Times(AtLeast(1));
 
diff --git a/media/audio/win/audio_low_latency_input_win.cc b/media/audio/win/audio_low_latency_input_win.cc
index b16ef13..8227908 100644
--- a/media/audio/win/audio_low_latency_input_win.cc
+++ b/media/audio/win/audio_low_latency_input_win.cc
@@ -123,6 +123,7 @@ void WASAPIAudioInputStream::Start(AudioInputCallback* callback) {
   if (started_)
     return;
 
+  DCHECK(!sink_);
   sink_ = callback;
 
   // Starts periodic AGC microphone measurements if the AGC has been enabled
@@ -173,6 +174,7 @@ void WASAPIAudioInputStream::Stop() {
   }
 
   started_ = false;
+  sink_ = NULL;
 }
 
 void WASAPIAudioInputStream::Close() {
@@ -180,10 +182,6 @@ void WASAPIAudioInputStream::Close() {
   // It is valid to call Close() before calling open or Start().
   // It is also valid to call Close() after Start() has been called.
   Stop();
-  if (sink_) {
-    sink_->OnClose(this);
-    sink_ = NULL;
-  }
 
   // Inform the audio manager that we have been closed. This will cause our
   // destruction.
diff --git a/media/audio/win/audio_low_latency_input_win_unittest.cc b/media/audio/win/audio_low_latency_input_win_unittest.cc
index 54bd3f7..6f64072e 100644
--- a/media/audio/win/audio_low_latency_input_win_unittest.cc
+++ b/media/audio/win/audio_low_latency_input_win_unittest.cc
@@ -41,20 +41,17 @@ class MockAudioInputCallback : public AudioInputStream::AudioInputCallback {
   MOCK_METHOD5(OnData, void(AudioInputStream* stream,
                             const uint8* src, uint32 size,
                             uint32 hardware_delay_bytes, double volume));
-  MOCK_METHOD1(OnClose, void(AudioInputStream* stream));
   MOCK_METHOD1(OnError, void(AudioInputStream* stream));
 };
 
 class FakeAudioInputCallback : public AudioInputStream::AudioInputCallback {
  public:
   FakeAudioInputCallback()
-    : closed_(false),
-      error_(false),
+    : error_(false),
       data_event_(false, false) {
   }
 
   const std::vector<uint8>& received_data() const { return received_data_; }
-  bool closed() const { return closed_; }
   bool error() const { return error_; }
 
   // Waits until OnData() is called on another thread.
@@ -69,10 +66,6 @@ class FakeAudioInputCallback : public AudioInputStream::AudioInputCallback {
     data_event_.Signal();
   }
 
-  virtual void OnClose(AudioInputStream* stream) OVERRIDE {
-    closed_ = true;
-  }
-
   virtual void OnError(AudioInputStream* stream) OVERRIDE {
     error_ = true;
   }
@@ -80,7 +73,6 @@ class FakeAudioInputCallback : public AudioInputStream::AudioInputCallback {
  private:
   std::vector<uint8> received_data_;
   base::WaitableEvent data_event_;
-  bool closed_;
   bool error_;
 
   DISALLOW_COPY_AND_ASSIGN(FakeAudioInputCallback);
@@ -137,7 +129,6 @@ class WriteToFileAudioSink : public AudioInputStream::AudioInputCallback {
     }
   }
 
-  virtual void OnClose(AudioInputStream* stream) {}
   virtual void OnError(AudioInputStream* stream) {}
 
  private:
@@ -316,8 +307,6 @@ TEST(WinAudioInputTest, WASAPIAudioInputStreamOpenStartAndClose) {
   EXPECT_TRUE(ais->Open());
   MockAudioInputCallback sink;
   ais->Start(&sink);
-  EXPECT_CALL(sink, OnClose(ais.get()))
-      .Times(1);
   ais.Close();
 }
 
@@ -332,8 +321,6 @@ TEST(WinAudioInputTest, WASAPIAudioInputStreamOpenStartStopAndClose) {
   MockAudioInputCallback sink;
   ais->Start(&sink);
   ais->Stop();
-  EXPECT_CALL(sink, OnClose(ais.get()))
-      .Times(1);
   ais.Close();
 }
 
@@ -364,9 +351,6 @@ TEST(WinAudioInputTest, WASAPIAudioInputStreamMiscCallingSequences) {
   EXPECT_FALSE(wais->started());
   ais->Stop();
   EXPECT_FALSE(wais->started());
-
-  EXPECT_CALL(sink, OnClose(ais.get()))
-    .Times(1);
   ais.Close();
 }
 
@@ -406,8 +390,6 @@ TEST(WinAudioInputTest, WASAPIAudioInputStreamTestPacketSizes) {
   // Store current packet size (to be used in the subsequent tests).
   int samples_per_packet_10ms = aisw.samples_per_packet();
 
-  EXPECT_CALL(sink, OnClose(ais.get()))
-      .Times(1);
   ais.Close();
 
   // 20 ms packet size.
@@ -425,9 +407,6 @@ TEST(WinAudioInputTest, WASAPIAudioInputStreamTestPacketSizes) {
   ais->Start(&sink);
   loop.Run();
   ais->Stop();
-
-  EXPECT_CALL(sink, OnClose(ais.get()))
-      .Times(1);
   ais.Close();
 
   // 5 ms packet size.
@@ -445,9 +424,6 @@ TEST(WinAudioInputTest, WASAPIAudioInputStreamTestPacketSizes) {
   ais->Start(&sink);
   loop.Run();
   ais->Stop();
-
-  EXPECT_CALL(sink, OnClose(ais.get()))
-      .Times(1);
   ais.Close();
 }
 
@@ -476,7 +452,6 @@ TEST(WinAudioInputTest, WASAPIAudioInputStreamLoopback) {
   stream.Close();
 
   EXPECT_FALSE(sink.received_data().empty());
-  EXPECT_TRUE(sink.closed());
   EXPECT_FALSE(sink.error());
 }