Improves stereo/mono audio support on Android

webrtc/modules/audio_device/android/audio_manager_unittest.cc

Index: webrtc/modules/audio_device/android/audio_manager_unittest.cc
diff --git a/webrtc/modules/audio_device/android/audio_manager_unittest.cc b/webrtc/modules/audio_device/android/audio_manager_unittest.cc
index 0ebc66258e208d3647b166159d43a9507db560b4..e82376d7ef5e61204c4424aad0489f13fab51f14 100644
--- a/webrtc/modules/audio_device/android/audio_manager_unittest.cc
+++ b/webrtc/modules/audio_device/android/audio_manager_unittest.cc
@@ -136,6 +136,16 @@ TEST_F(AudioManagerTest, IsProAudioSupported) {
         audio_manager()->IsProAudioSupported() ? "Yes" : "No");
 }
 
+// Verify that playout side is configured for mono by default.
+TEST_F(AudioManagerTest, IsStereoPlayoutSupported) {
+  EXPECT_FALSE(audio_manager()->IsStereoPlayoutSupported());
+}
+
+// Verify that recording side is configured for mono by default.
+TEST_F(AudioManagerTest, IsStereoRecordSupported) {
+  EXPECT_FALSE(audio_manager()->IsStereoRecordSupported());
+}
+
 TEST_F(AudioManagerTest, ShowAudioParameterInfo) {
   const bool low_latency_out = audio_manager()->IsLowLatencyPlayoutSupported();
   const bool low_latency_in = audio_manager()->IsLowLatencyRecordSupported();