MSE: Allow negative parsed frame PTS/DTS in FrameProcessor

media/filters/frame_processor.cc

Index: media/filters/frame_processor.cc
diff --git a/media/filters/frame_processor.cc b/media/filters/frame_processor.cc
index 1acf58463302813a1d07ad9a40a02e483236e87e..3071439f6a0633b6a655ea196b99bd526e993559 100644
--- a/media/filters/frame_processor.cc
+++ b/media/filters/frame_processor.cc
@@ -107,14 +107,12 @@ bool FrameProcessor::ProcessFrame(
              << ", DUR=" << frame_duration.InSecondsF();
 
     // Sanity check the timestamps.
-    if (presentation_timestamp < base::TimeDelta()) {
-      DVLOG(2) << __FUNCTION__ << ": Negative or unknown frame PTS: "
-               << presentation_timestamp.InSecondsF();
+    if (presentation_timestamp == kNoTimestamp()) {
+      DVLOG(2) << __FUNCTION__ << ": Unknown frame PTS";
       return false;
     }
-    if (decode_timestamp < base::TimeDelta()) {
-      DVLOG(2) << __FUNCTION__ << ": Negative or unknown frame DTS: "
-               << decode_timestamp.InSecondsF();
+    if (decode_timestamp == kNoTimestamp()) {
+      DVLOG(2) << __FUNCTION__ << ": Unknown frame DTS";
       return false;
     }
     if (decode_timestamp > presentation_timestamp) {