Fix crashes caused when SourceBuffer.remove() is called starting at the presentation duration.

media/filters/source_buffer_stream_unittest.cc

Index: media/filters/source_buffer_stream_unittest.cc
diff --git a/media/filters/source_buffer_stream_unittest.cc b/media/filters/source_buffer_stream_unittest.cc
index 1cd9cfa3f67c2050b9c092e4f78d0ef5399f5e87..c653418a94573429ca118a5589acc94c9d3701e4 100644
--- a/media/filters/source_buffer_stream_unittest.cc
+++ b/media/filters/source_buffer_stream_unittest.cc
@@ -3535,6 +3535,17 @@ TEST_F(SourceBufferStreamTest,
   CheckExpectedBuffers("90K 121 151");
 }
 
+TEST_F(SourceBufferStreamTest, Remove_StartingAtDuration) {
+  Seek(0);
+  NewSegmentAppend("10K 40 70K 100 130K");
+  CheckExpectedRangesByTimestamp("{ [10,160) }");
+
+  RemoveInMs(160, 165, 160);
+
+  CheckExpectedRangesByTimestamp("{ [10,160) }");
+  CheckExpectedBuffers("10K 40 70K 100 130K");
+}
+
 TEST_F(SourceBufferStreamTest, Text_Append_SingleRange) {
   SetTextStream();
   NewSegmentAppend("0K 500K 1000K");