Let clients interact with VideoCaptureDeviceClient instead of VideoCaptureDevice

content/browser/media/capture/web_contents_video_capture_device_unittest.cc

Index: content/browser/media/capture/web_contents_video_capture_device_unittest.cc
diff --git a/content/browser/media/capture/web_contents_video_capture_device_unittest.cc b/content/browser/media/capture/web_contents_video_capture_device_unittest.cc
index 9b082837e8bc0df1a011072fb9a4a1fb88958068..84f931c2fea41ac7a0c5add9bd51e68d0eeb5860 100644
--- a/content/browser/media/capture/web_contents_video_capture_device_unittest.cc
+++ b/content/browser/media/capture/web_contents_video_capture_device_unittest.cc
@@ -448,6 +448,12 @@ class StubClient : public media::VideoCaptureDevice::Client {
       return base::FileDescriptor();
     }
 #endif
+    bool IsBackedByVideoFrame() const override {
+      return buffer_handle_->IsBackedByVideoFrame();
+    }
+    scoped_refptr<media::VideoFrame> GetVideoFrame() override {
+      return buffer_handle_->GetVideoFrame();
+    }
 
    private:
     ~AutoReleaseBuffer() override { pool_->RelinquishProducerReservation(id_); }