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

net/http2/tools/failure.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/tools/failure.h"
-
-namespace net {
-namespace test {
-
-// This is a copy of the same named method in ::testing::internal.
-// TODO(jamessynge): See about getting something like VERIFY_* adopted by
-// gUnit (probably a very difficult task!).
-std::string GetBoolAssertionFailureMessage(
-    const ::testing::AssertionResult& assertion_result,
-    const char* expression_text,
-    const char* actual_predicate_value,
-    const char* expected_predicate_value) {
-  const char* actual_message = assertion_result.message();
-  ::testing::Message msg;
-  msg << "Value of: " << expression_text
-      << "\n  Actual: " << actual_predicate_value;
-  if (actual_message[0] != '\0')
-    msg << " (" << actual_message << ")";
-  msg << "\nExpected: " << expected_predicate_value;
-  return msg.GetString();
-}
-
-}  // namespace test
-}  // namespace net