Replace the existing SpdyHeaderBlock typedef with a class.

net/spdy/spdy_header_block_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_header_block.h"
-
-#include "base/memory/scoped_ptr.h"
-#include "base/values.h"
-#include "net/log/net_log.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace net {
-
-namespace {
-
-TEST(SpdyHeaderBlockTest, ToNetLogParamAndBackAgain) {
-  SpdyHeaderBlock headers;
-  headers["A"] = "a";
-  headers["B"] = "b";
-
-  scoped_ptr<base::Value> event_param(SpdyHeaderBlockNetLogCallback(
-      &headers, NetLogCaptureMode::IncludeCookiesAndCredentials()));
-
-  SpdyHeaderBlock headers2;
-  ASSERT_TRUE(SpdyHeaderBlockFromNetLogParam(event_param.get(), &headers2));
-  EXPECT_EQ(headers, headers2);
-}
-
-}  // namespace
-
-}  // namespace net