Decouple capture timestamp and reference time

media/capture/video/win/video_capture_device_mf_win.cc

Index: media/capture/video/win/video_capture_device_mf_win.cc
diff --git a/media/capture/video/win/video_capture_device_mf_win.cc b/media/capture/video/win/video_capture_device_mf_win.cc
index 85ebd7e3bc699f821941504dc4f7663b9db34d18..17909a89be89c8d32f8941aa7be7ae442bf26e7c 100644
--- a/media/capture/video/win/video_capture_device_mf_win.cc
+++ b/media/capture/video/win/video_capture_device_mf_win.cc
@@ -109,14 +109,17 @@ class MFReaderCallback final
     return 1U;
   }
 
-  STDMETHOD(OnReadSample)(HRESULT status,
-                          DWORD stream_index,
-                          DWORD stream_flags,
-                          LONGLONG time_stamp,
-                          IMFSample* sample) override {
-    base::TimeTicks stamp(base::TimeTicks::Now());
+  STDMETHOD(OnReadSample)
+  (HRESULT status,
+   DWORD stream_index,
+   DWORD stream_flags,
+   LONGLONG raw_time_stamp,
+   IMFSample* sample) override {
+    base::TimeTicks reference_time(base::TimeTicks::Now());
+    base::TimeDelta timestamp =
+        base::TimeDelta::FromMicroseconds(raw_time_stamp / 10);
     if (!sample) {
-      observer_->OnIncomingCapturedData(NULL, 0, 0, stamp);
+      observer_->OnIncomingCapturedData(NULL, 0, 0, reference_time, timestamp);
       return S_OK;
     }
 
@@ -130,7 +133,8 @@ class MFReaderCallback final
         DWORD length = 0, max_length = 0;
         BYTE* data = NULL;
         buffer->Lock(&data, &max_length, &length);
-        observer_->OnIncomingCapturedData(data, length, 0, stamp);
+        observer_->OnIncomingCapturedData(data, length, 0, reference_time,
+                                          timestamp);
         buffer->Unlock();
       }
     }
@@ -299,11 +303,12 @@ void VideoCaptureDeviceMFWin::OnIncomingCapturedData(
     const uint8_t* data,
     int length,
     int rotation,
-    const base::TimeTicks& time_stamp) {
+    base::TimeTicks reference_time,
+    base::TimeDelta timestamp) {
   base::AutoLock lock(lock_);
   if (data && client_.get()) {
     client_->OnIncomingCapturedData(data, length, capture_format_, rotation,
-                                    time_stamp);
+                                    reference_time, timestamp);
   }
 
   if (capture_) {