Replace the existing SpdyHeaderBlock typedef with a class.

net/spdy/spdy_session_unittest.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_session.h"
 
 #include "base/base64.h"
 #include "base/bind.h"
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 4558 matching lines @@
   headers["alpha"] = "beta";
 
   SpdyHeaderBlock request_headers;
   SpdyHeaderBlock response_headers;
 
   SplitPushedHeadersToRequestAndResponse(
       headers, spdy_util_.spdy_version(), &request_headers, &response_headers);
 
   SpdyHeaderBlock::const_iterator it = response_headers.find("alpha");
   std::string alpha_val =
-      (it == response_headers.end()) ? std::string() : it->second;
+      (it == response_headers.end()) ? std::string() : it->second.as_string();
   EXPECT_EQ("beta", alpha_val);
 
   GURL request_url =
       GetUrlFromHeaderBlock(request_headers, spdy_util_.spdy_version(), true);
   EXPECT_EQ(kStreamUrl, request_url);
 }
 
 // Regression. Sorta. Push streams and client streams were sharing a single
 // limit for a long time.
 TEST_P(SpdySessionTest, PushedStreamShouldNotCountToClientConcurrencyLimit) {
@@ skipping 523 matching lines @@
   ssl_info.cert = ImportCertFromFile(GetTestCertsDirectory(),
                                      "spdy_pooling.pem");
   ssl_info.is_issued_by_known_root = true;
   ssl_info.public_key_hashes.push_back(test::GetTestHashValue(primary_pin));
 
   EXPECT_TRUE(SpdySession::CanPool(
       &tss, ssl_info, "www.example.org", "mail.example.org"));
 }
 
 }  // namespace net