3 files changed, 12 insertions, 19 deletions
diff --git a/media/audio/mac/audio_output_mac.cc b/media/audio/mac/audio_output_mac.cc
index 42e80a1..24dc86b 100644
--- a/media/audio/mac/audio_output_mac.cc
+++ b/media/audio/mac/audio_output_mac.cc
@@ -146,25 +146,22 @@ void PCMQueueOutAudioOutputStream::Stop() {
     HandleError(err);
 }
 
-void PCMQueueOutAudioOutputStream::SetVolume(double left_level,
-                                             double ) {
+void PCMQueueOutAudioOutputStream::SetVolume(double volume) {
   if (!audio_queue_)
     return;
-  volume_ = static_cast<float>(left_level);
+  volume_ = static_cast<float>(volume);
   OSStatus err = AudioQueueSetParameter(audio_queue_,
                                         kAudioQueueParam_Volume,
-                                        left_level);
+                                        volume);
   if (err != noErr) {
     HandleError(err);
   }
 }
 
-void PCMQueueOutAudioOutputStream::GetVolume(double* left_level,
-                                             double* right_level) {
+void PCMQueueOutAudioOutputStream::GetVolume(double* volume) {
   if (!audio_queue_)
     return;
-  *left_level = volume_;
-  *right_level = volume_;
+  *volume = volume_;
 }
 
 // Reorder PCM from AAC layout to Core Audio layout.
diff --git a/media/audio/mac/audio_output_mac.h b/media/audio/mac/audio_output_mac.h
index 14afff7..10fc229 100644
--- a/media/audio/mac/audio_output_mac.h
+++ b/media/audio/mac/audio_output_mac.h
@@ -33,8 +33,8 @@ class PCMQueueOutAudioOutputStream : public AudioOutputStream {
   virtual void Close();
   virtual void Start(AudioSourceCallback* callback);
   virtual void Stop();
-  virtual void SetVolume(double left_level, double right_level);
-  virtual void GetVolume(double* left_level, double* right_level);
+  virtual void SetVolume(double volume);
+  virtual void GetVolume(double* volume);
 
  private:
   // The audio is double buffered.
diff --git a/media/audio/mac/audio_output_mac_unittest.cc b/media/audio/mac/audio_output_mac_unittest.cc
index a517e95..985ca45 100644
--- a/media/audio/mac/audio_output_mac_unittest.cc
+++ b/media/audio/mac/audio_output_mac_unittest.cc
@@ -92,19 +92,15 @@ TEST(MacAudioTest, PCMWaveStreamPlay200HzTone44KssMono) {
 
   EXPECT_TRUE(oas->Open(bytes_100_ms));
 
-  oas->SetVolume(0.5, 0.5);
+  oas->SetVolume(0.5);
   oas->Start(&source);
   usleep(1500000);
 
   // Test that the volume is within the set limits.
-  double left_volume = 0.0;
-  double right_volume = 0.0;
-  oas->GetVolume(&left_volume, &right_volume);
-  EXPECT_LT(left_volume, 0.51);
-  EXPECT_GT(left_volume, 0.49);
-  EXPECT_LT(right_volume, 0.51);
-  EXPECT_GT(right_volume, 0.49);
-
+  double volume = 0.0;
+  oas->GetVolume(&volume);
+  EXPECT_LT(volume, 0.51);
+  EXPECT_GT(volume, 0.49);
   oas->Stop();
   oas->Close();
 }