Add an async ReadInitialHeaders method to QuicChromiumClientStream::Handle

net/quic/chromium/bidirectional_stream_quic_impl_unittest.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/quic/chromium/bidirectional_stream_quic_impl.h"
 
 #include <utility>
 
 #include "base/callback_helpers.h"
 #include "base/memory/ptr_util.h"
@@ skipping 278 matching lines @@
     ON_DATA_READ,
     ON_TRAILERS_RECEIVED,
     ON_FAILED,
   };
 
   DeleteStreamDelegate(IOBuffer* buf, int buf_len, Phase phase)
       : TestDelegateBase(buf, buf_len), phase_(phase) {}
   ~DeleteStreamDelegate() override {}
 
   void OnHeadersReceived(const SpdyHeaderBlock& response_headers) override {
+    // Make a copy of |response_headers| before the stream is deleted, since
+    // the headers are owned by the stream.
+    SpdyHeaderBlock headers_copy = response_headers.Clone();
     if (phase_ == ON_HEADERS_RECEIVED) {
       DeleteStream();
     }
-    TestDelegateBase::OnHeadersReceived(response_headers);
+    TestDelegateBase::OnHeadersReceived(headers_copy);
   }
 
   void OnDataSent() override { NOTREACHED(); }
 
   void OnDataRead(int bytes_read) override {
     DCHECK_NE(ON_HEADERS_RECEIVED, phase_);
     if (phase_ == ON_DATA_READ)
       DeleteStream();
     TestDelegateBase::OnDataRead(bytes_read);
   }
@@ skipping 1510 matching lines @@
 
   base::RunLoop().RunUntilIdle();
 
   EXPECT_EQ(1, delegate->on_data_read_count());
   EXPECT_EQ(0, delegate->on_data_sent_count());
 }
 
 }  // namespace test
 
 }  // namespace net