Replace the existing SpdyHeaderBlock typedef with a class.

net/spdy/spdy_stream_test_util.cc

 // Copyright (c) 2012 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_test_util.h"
 
 #include <cstddef>
 
 #include "base/stl_util.h"
 #include "net/base/completion_callback.h"
@@ skipping 83 matching lines @@
     EXPECT_EQ(
         len,
         received_data_queue_.Dequeue(string_as_array(&received_data), len));
   }
   return received_data;
 }
 
 std::string StreamDelegateBase::GetResponseHeaderValue(
     const std::string& name) const {
   SpdyHeaderBlock::const_iterator it = response_headers_.find(name);
-  return (it == response_headers_.end()) ? std::string() : it->second;
+  return (it == response_headers_.end()) ? std::string()
+                                         : it->second.as_string();
 }
 
 StreamDelegateDoNothing::StreamDelegateDoNothing(
     const base::WeakPtr<SpdyStream>& stream)
     : StreamDelegateBase(stream) {}
 
 StreamDelegateDoNothing::~StreamDelegateDoNothing() {
 }
 
 StreamDelegateSendImmediate::StreamDelegateSendImmediate(
@@ skipping 41 matching lines @@
 SpdyResponseHeadersStatus
 StreamDelegateCloseOnHeaders::OnResponseHeadersUpdated(
     const SpdyHeaderBlock& response_headers) {
   stream()->Cancel();
   return RESPONSE_HEADERS_ARE_COMPLETE;
 }
 
 } // namespace test
 
 } // namespace net