Pass camera facing info to audio client

content/browser/renderer_host/media/video_capture_manager.cc

Index: content/browser/renderer_host/media/video_capture_manager.cc
diff --git a/content/browser/renderer_host/media/video_capture_manager.cc b/content/browser/renderer_host/media/video_capture_manager.cc
index 007fae8d034143bd019b28d18fa6ea52b26a205f..9b0a8db11408e50b8834086b1aacd8d07c97f88b 100644
--- a/content/browser/renderer_host/media/video_capture_manager.cc
+++ b/content/browser/renderer_host/media/video_capture_manager.cc
@@ -34,6 +34,7 @@
 #include "content/public/common/media_stream_request.h"
 #include "media/base/bind_to_current_loop.h"
 #include "media/base/media_switches.h"
+#include "media/base/video_facing.h"
 #include "media/capture/video/video_capture_buffer_pool_impl.h"
 #include "media/capture/video/video_capture_buffer_tracker_factory_impl.h"
 #include "media/capture/video/video_capture_device.h"
@@ -334,13 +335,19 @@ VideoCaptureManager::VideoCaptureManager(
     std::unique_ptr<media::VideoCaptureDeviceFactory> factory)
     : listener_(nullptr),
       new_capture_session_id_(1),
-      video_capture_device_factory_(std::move(factory)) {}
+      video_capture_device_factory_(std::move(factory)),
+      capture_observer_(nullptr) {}

[chfremer, 2017/01/30 19:49:28]

No need to initialize a std::unique_ptr<> member to nullptr. It is automatic.

[shenghao, 2017/02/08 02:07:10]

Done.

 
 VideoCaptureManager::~VideoCaptureManager() {
   DCHECK(devices_.empty());
   DCHECK(device_start_queue_.empty());
 }
 
+void VideoCaptureManager::SetVideoCaptureObserver(
+    std::unique_ptr<media::VideoCaptureObserver> observer) {
+  capture_observer_ = std::move(observer);
+}
+
 void VideoCaptureManager::Register(
     MediaStreamProviderListener* listener,
     const scoped_refptr<base::SingleThreadTaskRunner>& device_task_runner) {
@@ -471,6 +478,11 @@ void VideoCaptureManager::DoStopDevice(DeviceEntry* entry) {
     }
   }
 
+  const DeviceInfo* device_info = GetDeviceInfoById(entry->id);
+  if (device_info != NULL && capture_observer_.get() != NULL) {

[chfremer, 2017/01/30 19:49:28]

NULL -> nullptr

[shenghao, 2017/02/08 02:07:10]

Done.

+    capture_observer_->OnVideoCaptureStopped(device_info->descriptor.facing);
+  }
+
   DVLOG(3) << "DoStopDevice. Send stop request for device = " << entry->id
            << " serial_id = " << entry->serial_id << ".";
   entry->video_capture_controller.OnLog(
@@ -527,6 +539,10 @@ void VideoCaptureManager::HandleQueuedStartRequest() {
                                found->descriptor.GetNameAndModel().c_str(),
                                found->descriptor.GetCaptureApiTypeString()));
 
+        if (capture_observer_.get() != NULL) {

[chfremer, 2017/01/30 19:49:28]

NULL -> nullptr

[shenghao, 2017/02/08 02:07:10]

Done.

+          capture_observer_->OnVideoCaptureStarted(found->descriptor.facing);
+        }
+
         start_capture_function =
             base::Bind(&VideoCaptureManager::DoStartDeviceCaptureOnDeviceThread,
                        this, found->descriptor, request->params(),