Deletes dead code.

net/quic/core/quic_spdy_stream.cc

Index: net/quic/core/quic_spdy_stream.cc
diff --git a/net/quic/core/quic_spdy_stream.cc b/net/quic/core/quic_spdy_stream.cc
index 502145c66de315a6500f3412cbd1ad03535c73bb..2e743f7c66383fc92868410ae0cab86576f3acc8 100644
--- a/net/quic/core/quic_spdy_stream.cc
+++ b/net/quic/core/quic_spdy_stream.cc
@@ -146,21 +146,7 @@ bool QuicSpdyStream::IsDoneReading() const {
 }
 
 bool QuicSpdyStream::HasBytesToRead() const {
-  bool headers_to_read = !decompressed_headers_.empty();
-  bool body_to_read = sequencer()->HasBytesToRead();
-  bool trailers_to_read = !decompressed_trailers_.empty();
-  return headers_to_read || body_to_read || trailers_to_read;
-}
-
-void QuicSpdyStream::MarkHeadersConsumed(size_t bytes_consumed) {
-  decompressed_headers_.erase(0, bytes_consumed);
-  if (FinishedReadingHeaders()) {
-    sequencer()->SetUnblocked();
-  }
-}
-
-void QuicSpdyStream::MarkTrailersConsumed(size_t bytes_consumed) {
-  decompressed_trailers_.erase(0, bytes_consumed);
+  return sequencer()->HasBytesToRead();
 }
 
 void QuicSpdyStream::MarkTrailersConsumed() {
@@ -180,28 +166,11 @@ void QuicSpdyStream::SetPriority(SpdyPriority priority) {
   priority_ = priority;
 }
 
-void QuicSpdyStream::OnStreamHeaders(StringPiece headers_data) {
-  if (!headers_decompressed_) {
-    headers_data.AppendToString(&decompressed_headers_);
-  } else {
-    DCHECK(!trailers_decompressed_);
-    headers_data.AppendToString(&decompressed_trailers_);
-  }
-}
-
 void QuicSpdyStream::OnStreamHeadersPriority(SpdyPriority priority) {
   DCHECK_EQ(Perspective::IS_SERVER, session()->connection()->perspective());
   SetPriority(priority);
 }
 
-void QuicSpdyStream::OnStreamHeadersComplete(bool fin, size_t frame_len) {
-  if (!headers_decompressed_) {
-    OnInitialHeadersComplete(fin, frame_len);
-  } else {
-    OnTrailingHeadersComplete(fin, frame_len);
-  }
-}
-
 void QuicSpdyStream::OnStreamHeaderList(bool fin,
                                         size_t frame_len,
                                         const QuicHeaderList& header_list) {
@@ -209,6 +178,8 @@ void QuicSpdyStream::OnStreamHeaderList(bool fin,
   // if the current headers are too large. So if the list is empty here
   // then the headers list must have been too large, and the stream should
   // be reset.
+  // TODO(rch): Use an explicit "headers too large" signal. An empty header list
+  // might be acceptable if it corresponds to a trailing header frame.
   if (FLAGS_quic_limit_uncompressed_headers && header_list.empty()) {
     OnHeadersTooLarge();
     if (IsDoneReading()) {
@@ -226,16 +197,6 @@ void QuicSpdyStream::OnHeadersTooLarge() {
   Reset(QUIC_HEADERS_TOO_LARGE);
 }
 
-void QuicSpdyStream::OnInitialHeadersComplete(bool fin, size_t /*frame_len*/) {
-  headers_decompressed_ = true;
-  if (fin) {
-    OnStreamFrame(QuicStreamFrame(id(), fin, 0, StringPiece()));
-  }
-  if (FinishedReadingHeaders()) {
-    sequencer()->SetUnblocked();
-  }
-}
-
 void QuicSpdyStream::OnInitialHeadersComplete(
     bool fin,
     size_t /*frame_len*/,
@@ -250,21 +211,6 @@ void QuicSpdyStream::OnInitialHeadersComplete(
   }
 }
 
-void QuicSpdyStream::OnPromiseHeaders(StringPiece headers_data) {
-  headers_data.AppendToString(&decompressed_headers_);
-}
-
-void QuicSpdyStream::OnPromiseHeadersComplete(
-    QuicStreamId /* promised_stream_id */,
-    size_t /* frame_len */) {
-  // To be overridden in QuicSpdyClientStream.  Not supported on
-  // server side.
-  session()->connection()->CloseConnection(
-      QUIC_INVALID_HEADERS_STREAM_DATA, "Promise headers received by server",
-      ConnectionCloseBehavior::SEND_CONNECTION_CLOSE_PACKET);
-  return;
-}
-
 void QuicSpdyStream::OnPromiseHeaderList(
     QuicStreamId /* promised_id */,
     size_t /* frame_len */,
@@ -277,41 +223,6 @@ void QuicSpdyStream::OnPromiseHeaderList(
   return;
 }
 
-void QuicSpdyStream::OnTrailingHeadersComplete(bool fin, size_t /*frame_len*/) {
-  DCHECK(!trailers_decompressed_);
-  if (fin_received()) {
-    DLOG(ERROR) << "Received Trailers after FIN, on stream: " << id();
-    session()->connection()->CloseConnection(
-        QUIC_INVALID_HEADERS_STREAM_DATA, "Trailers after fin",
-        ConnectionCloseBehavior::SEND_CONNECTION_CLOSE_PACKET);
-    return;
-  }
-  if (!fin) {
-    DLOG(ERROR) << "Trailers must have FIN set, on stream: " << id();
-    session()->connection()->CloseConnection(
-        QUIC_INVALID_HEADERS_STREAM_DATA, "Fin missing from trailers",
-        ConnectionCloseBehavior::SEND_CONNECTION_CLOSE_PACKET);
-    return;
-  }
-
-  size_t final_byte_offset = 0;
-  if (!SpdyUtils::ParseTrailers(decompressed_trailers().data(),
-                                decompressed_trailers().length(),
-                                &final_byte_offset, &received_trailers_)) {
-    DLOG(ERROR) << "Trailers are malformed: " << id();
-    session()->connection()->CloseConnection(
-        QUIC_INVALID_HEADERS_STREAM_DATA, "Trailers are malformed",
-        ConnectionCloseBehavior::SEND_CONNECTION_CLOSE_PACKET);
-    return;
-  }
-
-  // The data on this stream ends at |final_byte_offset|.
-  DVLOG(1) << "Stream ends at byte offset: " << final_byte_offset
-           << "  currently read: " << stream_bytes_read();
-  trailers_decompressed_ = true;
-  OnStreamFrame(QuicStreamFrame(id(), fin, final_byte_offset, StringPiece()));
-}
-
 void QuicSpdyStream::OnTrailingHeadersComplete(
     bool fin,
     size_t /*frame_len*/,
@@ -379,8 +290,7 @@ void QuicSpdyStream::OnCanWrite() {
 }
 
 bool QuicSpdyStream::FinishedReadingHeaders() const {
-  return headers_decompressed_ && decompressed_headers_.empty() &&
-         header_list_.empty();
+  return headers_decompressed_ && header_list_.empty();
 }
 
 bool QuicSpdyStream::ParseHeaderStatusCode(const SpdyHeaderBlock& header,
@@ -412,7 +322,7 @@ bool QuicSpdyStream::FinishedReadingTrailers() const {
   } else if (!trailers_decompressed_) {
     return true;
   } else {
-    return trailers_consumed_ && decompressed_trailers_.empty();
+    return trailers_consumed_;
   }
 }