Pass camera facing info to audio client

content/browser/renderer_host/media/audio_output_delegate_unittest.cc

Index: content/browser/renderer_host/media/audio_output_delegate_unittest.cc
diff --git a/content/browser/renderer_host/media/audio_output_delegate_unittest.cc b/content/browser/renderer_host/media/audio_output_delegate_unittest.cc
index d508735eaae807e869fd03c1a57564c67be16b18..57f6f893c3b737a63b9caf7b12fe6b899d3c689c 100644
--- a/content/browser/renderer_host/media/audio_output_delegate_unittest.cc
+++ b/content/browser/renderer_host/media/audio_output_delegate_unittest.cc
@@ -14,6 +14,7 @@
 #include "base/memory/ptr_util.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
+#include "component/arc/video_facing.h"
 #include "content/browser/audio_manager_thread.h"
 #include "content/browser/media/capture/audio_mirroring_manager.h"
 #include "content/browser/renderer_host/media/media_stream_manager.h"
@@ -96,6 +97,12 @@ class DummyAudioOutputStream : public media::AudioOutputStream {
   void Close() override {}
 };
 
+class MockVideoCaptureObserver : public component::VideoCaptureObserver {
+ public:
+  MOCK_METHOD1(OnVideoCaptureStarted, void(component::VideoFacingMode));
+  MOCK_METHOD1(OnVideoCaptureStopped, void(component::VideoFacingMode));
+};
+
 }  // namespace
 
 class AudioOutputDelegateTest : public testing::Test {
@@ -116,7 +123,7 @@ class AudioOutputDelegateTest : public testing::Test {
         audio_thread_->task_runner(), audio_thread_->worker_task_runner(),
         &log_factory_));
     media_stream_manager_ =
-        base::MakeUnique<MediaStreamManager>(audio_manager_.get());
+        base::MakeUnique<MediaStreamManager>(audio_manager_.get(), new MockVideoCaptureObserver());
   }
 
   // Test bodies are here, so that we can run them on the IO thread.