Revert of Add new HTTP/2 and HPACK decoder in net/http2/.

net/http2/hpack/http2_hpack_constants_test.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/http2/hpack/http2_hpack_constants.h"
-
-#include "base/logging.h"
-#include "testing/gmock/include/gmock/gmock.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-namespace net {
-namespace test {
-namespace {
-
-class HpackEntryTypeTest : public testing::Test {};
-
-TEST(HpackEntryTypeTest, HpackEntryTypeToString) {
-  EXPECT_EQ("kIndexedHeader",
-            HpackEntryTypeToString(HpackEntryType::kIndexedHeader));
-  EXPECT_EQ("kDynamicTableSizeUpdate",
-            HpackEntryTypeToString(HpackEntryType::kDynamicTableSizeUpdate));
-  EXPECT_EQ("kIndexedLiteralHeader",
-            HpackEntryTypeToString(HpackEntryType::kIndexedLiteralHeader));
-  EXPECT_EQ("kUnindexedLiteralHeader",
-            HpackEntryTypeToString(HpackEntryType::kUnindexedLiteralHeader));
-  EXPECT_EQ("kNeverIndexedLiteralHeader",
-            HpackEntryTypeToString(HpackEntryType::kNeverIndexedLiteralHeader));
-  EXPECT_EQ("UnknownHpackEntryType(12321)",
-            HpackEntryTypeToString(static_cast<HpackEntryType>(12321)));
-}
-
-}  // namespace
-}  // namespace test
-}  // namespace net