Pass camera facing info to audio client

content/browser/renderer_host/media/media_devices_dispatcher_host_unittest.cc

Index: content/browser/renderer_host/media/media_devices_dispatcher_host_unittest.cc
diff --git a/content/browser/renderer_host/media/media_devices_dispatcher_host_unittest.cc b/content/browser/renderer_host/media/media_devices_dispatcher_host_unittest.cc
index d4149cd4e4c5b6b7a7990b011e65085c787e920e..d9ad924bbec782eb1e2f149bf165497d16405709 100644
--- a/content/browser/renderer_host/media/media_devices_dispatcher_host_unittest.cc
+++ b/content/browser/renderer_host/media/media_devices_dispatcher_host_unittest.cc
@@ -16,6 +16,7 @@
 #include "base/memory/ptr_util.h"
 #include "base/run_loop.h"
 #include "base/threading/thread_task_runner_handle.h"
+#include "component/arc/video_facing.h"
 #include "content/browser/renderer_host/media/media_stream_manager.h"
 #include "content/browser/renderer_host/media/media_stream_ui_proxy.h"
 #include "content/browser/renderer_host/media/video_capture_manager.h"
@@ -64,6 +65,12 @@ class MockMediaDevicesListener : public ::mojom::MediaDevicesListener {
   mojo::Binding<::mojom::MediaDevicesListener> binding_;
 };
 
+class MockVideoCaptureObserver : public component::VideoCaptureObserver {
+ public:
+  MOCK_METHOD1(OnVideoCaptureStarted, void(component::VideoFacingMode));
+  MOCK_METHOD1(OnVideoCaptureStopped, void(component::VideoFacingMode));
+};
+
 }  // namespace
 
 class MediaDevicesDispatcherHostTest : public testing::Test {
@@ -75,7 +82,8 @@ class MediaDevicesDispatcherHostTest : public testing::Test {
     base::CommandLine::ForCurrentProcess()->AppendSwitch(
         switches::kUseFakeDeviceForMediaStream);
     audio_manager_.reset(
-        new media::MockAudioManager(base::ThreadTaskRunnerHandle::Get()));
+        new media::MockAudioManager(base::ThreadTaskRunnerHandle::Get()),
+        new MockVideoCaptureObserver());
     media_stream_manager_.reset(new MediaStreamManager(audio_manager_.get()));
 
     MockResourceContext* mock_resource_context =