Make SpdyHeaderBlock non-copyable.

net/spdy/spdy_stream_unittest.cc

 // Copyright 2013 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/spdy/spdy_stream.h"
 
 #include <stdint.h>
 
 #include <cstddef>
 #include <limits>
@@ skipping 208 matching lines @@
 // Delegate that receives trailers.
 class StreamDelegateWithTrailers : public test::StreamDelegateWithBody {
  public:
   StreamDelegateWithTrailers(const base::WeakPtr<SpdyStream>& stream,
                              base::StringPiece data)
       : StreamDelegateWithBody(stream, data) {}
 
   ~StreamDelegateWithTrailers() override {}
 
   void OnTrailers(const SpdyHeaderBlock& trailers) override {
-    trailers_ = trailers;
+    trailers_ = trailers.Clone();
   }
 
   const SpdyHeaderBlock& trailers() const { return trailers_; }
 
  private:
   SpdyHeaderBlock trailers_;
 };
 
 // Regression test for crbug.com/481033.
 TEST_P(SpdyStreamTest, Trailers) {
@@ skipping 910 matching lines @@
   EXPECT_EQ(response_len, stream->raw_received_bytes());
 
   // FIN
   data.Resume();
   EXPECT_EQ(ERR_CONNECTION_CLOSED, delegate.WaitForClose());
 }
 
 }  // namespace test
 
 }  // namespace net