Decouple capture timestamp and reference time

media/capture/video/fake_video_capture_device_unittest.cc

Index: media/capture/video/fake_video_capture_device_unittest.cc
diff --git a/media/capture/video/fake_video_capture_device_unittest.cc b/media/capture/video/fake_video_capture_device_unittest.cc
index c68944f9f5ee5fe8255a612f43b9bb1d98b2622a..48f649693adcd8ec816582a403233d4a3cf8d4c6 100644
--- a/media/capture/video/fake_video_capture_device_unittest.cc
+++ b/media/capture/video/fake_video_capture_device_unittest.cc
@@ -74,7 +74,8 @@ class MockClient : public VideoCaptureDevice::Client {
                               int length,
                               const VideoCaptureFormat& format,
                               int rotation,
-                              const base::TimeTicks& timestamp) {
+                              base::TimeTicks reference_time,
+                              base::TimeDelta timestamp) override {
     frame_cb_.Run(format);
   }
   // Virtual methods for capturing using Client's Buffers.