Change SetOutputScaling to set a single level, not left/right levels.

talk/media/webrtc/webrtcvoiceengine_unittest.cc

Index: talk/media/webrtc/webrtcvoiceengine_unittest.cc
diff --git a/talk/media/webrtc/webrtcvoiceengine_unittest.cc b/talk/media/webrtc/webrtcvoiceengine_unittest.cc
index 70318d14f72c5cbaada7e39359a9eb5f6e3fe969..97abede502a32e384e251d46b7b597d04dafe5d5 100644
--- a/talk/media/webrtc/webrtcvoiceengine_unittest.cc
+++ b/talk/media/webrtc/webrtcvoiceengine_unittest.cc
@@ -2899,25 +2899,21 @@ TEST_F(WebRtcVoiceEngineTestFake, TestGetChannelNumInConferenceCalls) {
 
 TEST_F(WebRtcVoiceEngineTestFake, SetOutputScaling) {
   EXPECT_TRUE(SetupEngine());
-  float scale, left, right;
-  EXPECT_TRUE(channel_->SetOutputScaling(0, 1, 2));
+  float scale;
+  EXPECT_TRUE(channel_->SetOutputScaling(0, 2));
   int channel_id = voe_.GetLastChannel();
   EXPECT_EQ(0, voe_.GetChannelOutputVolumeScaling(channel_id, scale));
-  EXPECT_EQ(0, voe_.GetOutputVolumePan(channel_id, left, right));
-  EXPECT_DOUBLE_EQ(1, left * scale);
-  EXPECT_DOUBLE_EQ(2, right * scale);
+  EXPECT_DOUBLE_EQ(2, scale);
 
-  EXPECT_FALSE(channel_->SetOutputScaling(kSsrc2, 1, 2));
+  EXPECT_FALSE(channel_->SetOutputScaling(kSsrc2, 0.5));
   cricket::StreamParams stream;
   stream.ssrcs.push_back(kSsrc2);
   EXPECT_TRUE(channel_->AddRecvStream(stream));
 
-  EXPECT_TRUE(channel_->SetOutputScaling(kSsrc2, 2, 1));
+  EXPECT_TRUE(channel_->SetOutputScaling(kSsrc2, 3));
   channel_id = voe_.GetLastChannel();
   EXPECT_EQ(0, voe_.GetChannelOutputVolumeScaling(channel_id, scale));
-  EXPECT_EQ(0, voe_.GetOutputVolumePan(channel_id, left, right));
-  EXPECT_DOUBLE_EQ(2, left * scale);
-  EXPECT_DOUBLE_EQ(1, right * scale);
+  EXPECT_DOUBLE_EQ(3, scale);
 }
 
 TEST_F(WebRtcVoiceEngineTestFake, SetsSyncGroupFromSyncLabel) {