Rename QuicSpdyStream::IsClosed() -> IsSequencerClosed().

IsClosed() is misleading because it implies both read/write sides are closed.

PiperOrigin-RevId: 328562437
Change-Id: I5259740408066fff71dd1ce57af8a003eed8a745

quic/core/http/quic_spdy_stream.h

diff --git a/quic/core/http/quic_spdy_stream.h b/quic/core/http/quic_spdy_stream.h
index 61bc1fb..ee15732 100644
--- a/quic/core/http/quic_spdy_stream.h
+++ b/quic/core/http/quic_spdy_stream.h
@@ -213,7 +213,7 @@
 
   // Returns true if the sequencer has delivered the FIN, and no more body bytes
   // will be available.
-  bool IsClosed() { return sequencer()->IsClosed(); }
+  bool IsSequencerClosed() { return sequencer()->IsClosed(); }
 
   // QpackDecodedHeadersAccumulator::Visitor implementation.
   void OnHeadersDecoded(QuicHeaderList headers,