MSE: Test append window discontinuity detection

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 7f83a226b75cb9ad3165a81c115c72d1371e3510..13df21c132a6720d9f05480a255ae25ab05acd17 100644
--- a/media/filters/frame_processor.cc
+++ b/media/filters/frame_processor.cc
@@ -126,6 +126,8 @@ bool FrameProcessor::ProcessFrame(scoped_refptr<StreamParserBuffer> frame,
 
     // TODO(acolwell/wolenetz): All stream parsers must emit valid (positive)
     // frame durations. For now, we allow non-negative frame duration.
+    // Until frame durations are trusted, SourceBufferStream inter-buffer
+    // distance fudging may merge otherwise discontinuous ranges.
     // See http://crbug.com/351166.
     if (frame_duration == kNoTimestamp()) {
       DVLOG(2) << __FUNCTION__ << ": Frame missing duration (kNoTimestamp())";