Revert of QUIC - instrumentation for testing null QuicSpdyStream.

net/quic/quic_spdy_stream.cc

Index: net/quic/quic_spdy_stream.cc
diff --git a/net/quic/quic_spdy_stream.cc b/net/quic/quic_spdy_stream.cc
index d764283986ce0cec75a8b10bb0a13f22990dd5d5..de4725465b251894717a6b5282ef446e54659e6b 100644
--- a/net/quic/quic_spdy_stream.cc
+++ b/net/quic/quic_spdy_stream.cc
@@ -4,8 +4,6 @@
 
 #include "net/quic/quic_spdy_stream.h"
 
-// TODO(rtenneti): Temporary while investigating crbug.com/585591.
-#include "base/debug/alias.h"
 #include "base/logging.h"
 #include "base/strings/string_number_conversions.h"
 #include "net/quic/quic_bug_tracker.h"
@@ -39,21 +37,6 @@ QuicSpdyStream::QuicSpdyStream(QuicStreamId id, QuicSpdySession* spdy_session)
 
 QuicSpdyStream::~QuicSpdyStream() {
   spdy_session_->UnregisterStreamPriority(id());
-  // TODO(rtenneti): Temporary until crbug.com/585591 is solved.
-  liveness_ = DEAD;
-  // Get callstack, if the object is going away and we are doing a Read().
-  bool read_in_progress = read_in_progress_;
-  base::debug::Alias(&read_in_progress);
-  CHECK(!read_in_progress);
-}
-
-// TODO(rtenneti): Temporary until crbug.com/585591 is solved.
-void QuicSpdyStream::CrashIfInvalid() const {
-  Liveness liveness = liveness_;
-  if (liveness == ALIVE)
-    return;
-  base::debug::Alias(&liveness);
-  CHECK_EQ(ALIVE, liveness);
 }
 
 void QuicSpdyStream::CloseWriteSide() {