Revert of Revert of Use the new java_cpp_enum rule in content.

content/public/common/result_codes_list.h

-// Copyright (c) 2013 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.
-
-// Intentionally no include guards because this file is meant to be included
-// inside a macro to generate enum values.
-
-// This file consolidates all the return codes for the browser and renderer
-// process. The return code is the value that:
-// a) is returned by main() or winmain(), or
-// b) specified in the call for ExitProcess() or TerminateProcess(), or
-// c) the exception value that causes a process to terminate.
-//
-// It is advisable to not use negative numbers because the Windows API returns
-// it as an unsigned long and the exception values have high numbers. For
-// example EXCEPTION_ACCESS_VIOLATION value is 0xC0000005.
-
-#include "build/build_config.h"
-
-// Process terminated normally.
-RESULT_CODE(NORMAL_EXIT, 0)
-
-// Process was killed by user or system.
-RESULT_CODE(KILLED, 1)
-
-// Process hung.
-RESULT_CODE(HUNG, 2)
-
-// A bad message caused the process termination.
-RESULT_CODE(KILLED_BAD_MESSAGE, 3)