Revert https://codereview.chromium.org/1291903002 (protobuf roll).

third_party/protobuf/src/google/protobuf/stubs/port.h

Index: third_party/protobuf/src/google/protobuf/stubs/port.h
diff --git a/third_party/protobuf/src/google/protobuf/stubs/port.h b/third_party/protobuf/src/google/protobuf/stubs/port.h
deleted file mode 100644
index cd4dc8f7c366438840f7fd5d642c9c5542177800..0000000000000000000000000000000000000000
--- a/third_party/protobuf/src/google/protobuf/stubs/port.h
+++ /dev/null
@@ -1,401 +0,0 @@
-// Protocol Buffers - Google's data interchange format
-// Copyright 2008 Google Inc.  All rights reserved.
-// https://developers.google.com/protocol-buffers/
-//
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-// notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-// copyright notice, this list of conditions and the following disclaimer
-// in the documentation and/or other materials provided with the
-// distribution.
-//     * Neither the name of Google Inc. nor the names of its
-// contributors may be used to endorse or promote products derived from
-// this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#ifndef GOOGLE_PROTOBUF_STUBS_PORT_H_
-#define GOOGLE_PROTOBUF_STUBS_PORT_H_
-
-#include <assert.h>
-#include <stdlib.h>
-#include <cstddef>
-#include <string>
-#include <string.h>
-#if defined(__osf__)
-// Tru64 lacks stdint.h, but has inttypes.h which defines a superset of
-// what stdint.h would define.
-#include <inttypes.h>
-#elif !defined(_MSC_VER)
-#include <stdint.h>
-#endif
-
-#undef PROTOBUF_LITTLE_ENDIAN
-#ifdef _MSC_VER
-  // Assuming windows is always little-endian.
-  #if !defined(PROTOBUF_DISABLE_LITTLE_ENDIAN_OPT_FOR_TEST)
-    #define PROTOBUF_LITTLE_ENDIAN 1
-  #endif
-  #if _MSC_VER >= 1300
-    // If MSVC has "/RTCc" set, it will complain about truncating casts at
-    // runtime.  This file contains some intentional truncating casts.
-    #pragma runtime_checks("c", off)
-  #endif
-#else
-  #include <sys/param.h>   // __BYTE_ORDER
-  #if ((defined(__LITTLE_ENDIAN__) && !defined(__BIG_ENDIAN__)) || \
-         (defined(__BYTE_ORDER) && __BYTE_ORDER == __LITTLE_ENDIAN)) && \
-      !defined(PROTOBUF_DISABLE_LITTLE_ENDIAN_OPT_FOR_TEST)
-    #define PROTOBUF_LITTLE_ENDIAN 1
-  #endif
-#endif
-// The macros defined below are required in order to make protobuf_lite a
-// component on all platforms. See http://crbug.com/172800.
-#if defined(COMPONENT_BUILD) && defined(PROTOBUF_USE_DLLS)
-  #if defined(_MSC_VER)
-    #ifdef LIBPROTOBUF_EXPORTS
-      #define LIBPROTOBUF_EXPORT __declspec(dllexport)
-    #else
-      #define LIBPROTOBUF_EXPORT __declspec(dllimport)
-    #endif
-    #ifdef LIBPROTOC_EXPORTS
-      #define LIBPROTOC_EXPORT   __declspec(dllexport)
-    #else
-      #define LIBPROTOC_EXPORT   __declspec(dllimport)
-    #endif
-  #else  // defined(_MSC_VER)
-    #ifdef LIBPROTOBUF_EXPORTS
-      #define LIBPROTOBUF_EXPORT __attribute__((visibility("default")))
-    #else
-      #define LIBPROTOBUF_EXPORT
-    #endif
-    #ifdef LIBPROTOC_EXPORTS
-      #define LIBPROTOC_EXPORT   __attribute__((visibility("default")))
-    #else
-      #define LIBPROTOC_EXPORT
-    #endif
-  #endif
-#else  // defined(COMPONENT_BUILD) && defined(PROTOBUF_USE_DLLS)
-  #define LIBPROTOBUF_EXPORT
-  #define LIBPROTOC_EXPORT
-#endif
-
-// These #includes are for the byte swap functions declared later on.
-#ifdef _MSC_VER
-#include <stdlib.h>  // NOLINT(build/include)
-#elif defined(__APPLE__)
-#include <libkern/OSByteOrder.h>
-#elif defined(__GLIBC__) || defined(__CYGWIN__)
-#include <byteswap.h>  // IWYU pragma: export
-#endif
-
-// ===================================================================
-// from google3/base/port.h
-namespace google {
-namespace protobuf {
-
-typedef unsigned int uint;
-
-#ifdef _MSC_VER
-typedef signed __int8  int8;
-typedef __int16 int16;
-typedef __int32 int32;
-typedef __int64 int64;
-
-typedef unsigned __int8  uint8;
-typedef unsigned __int16 uint16;
-typedef unsigned __int32 uint32;
-typedef unsigned __int64 uint64;
-#else
-typedef signed char  int8;
-typedef short int16;
-typedef int int32;
-// NOTE: This should be "long long" for consistency with upstream, but
-// something is stacked against this particular type for 64bit hashing.
-// Switching it causes an obvious missing hash function (with an unobvious
-// cause) when building the tests.
-typedef int64_t int64;
-
-typedef unsigned char  uint8;
-typedef unsigned short uint16;
-typedef unsigned int uint32;
-// NOTE: This should be "unsigned long long" for consistency with upstream, but
-// something is stacked against this particular type for 64bit hashing.
-// Switching it causes an obvious missing hash function (with an unobvious
-// cause) when building the tests.
-typedef uint64_t uint64;
-#endif
-
-// long long macros to be used because gcc and vc++ use different suffixes,
-// and different size specifiers in format strings
-#undef GOOGLE_LONGLONG
-#undef GOOGLE_ULONGLONG
-#undef GOOGLE_LL_FORMAT
-
-#ifdef _MSC_VER
-#define GOOGLE_LONGLONG(x) x##I64
-#define GOOGLE_ULONGLONG(x) x##UI64
-#define GOOGLE_LL_FORMAT "I64"  // As in printf("%I64d", ...)
-#else
-#define GOOGLE_LONGLONG(x) x##LL
-#define GOOGLE_ULONGLONG(x) x##ULL
-#define GOOGLE_LL_FORMAT "ll"  // As in "%lld". Note that "q" is poor form also.
-#endif
-
-static const int32 kint32max = 0x7FFFFFFF;
-static const int32 kint32min = -kint32max - 1;
-static const int64 kint64max = GOOGLE_LONGLONG(0x7FFFFFFFFFFFFFFF);
-static const int64 kint64min = -kint64max - 1;
-static const uint32 kuint32max = 0xFFFFFFFFu;
-static const uint64 kuint64max = GOOGLE_ULONGLONG(0xFFFFFFFFFFFFFFFF);
-
-// -------------------------------------------------------------------
-// Annotations:  Some parts of the code have been annotated in ways that might
-//   be useful to some compilers or tools, but are not supported universally.
-//   You can #define these annotations yourself if the default implementation
-//   is not right for you.
-
-#ifndef GOOGLE_ATTRIBUTE_ALWAYS_INLINE
-#if defined(__GNUC__) && (__GNUC__ > 3 ||(__GNUC__ == 3 && __GNUC_MINOR__ >= 1))
-// For functions we want to force inline.
-// Introduced in gcc 3.1.
-#define GOOGLE_ATTRIBUTE_ALWAYS_INLINE __attribute__ ((always_inline))
-#else
-// Other compilers will have to figure it out for themselves.
-#define GOOGLE_ATTRIBUTE_ALWAYS_INLINE
-#endif
-#endif
-
-#ifndef GOOGLE_ATTRIBUTE_NOINLINE
-#if defined(__GNUC__) && (__GNUC__ > 3 ||(__GNUC__ == 3 && __GNUC_MINOR__ >= 1))
-// For functions we want to force not inline.
-// Introduced in gcc 3.1.
-#define GOOGLE_ATTRIBUTE_NOINLINE __attribute__ ((noinline))
-#else
-// Other compilers will have to figure it out for themselves.
-#define GOOGLE_ATTRIBUTE_NOINLINE
-#endif
-#endif
-
-#ifndef GOOGLE_ATTRIBUTE_DEPRECATED
-#ifdef __GNUC__
-// If the method/variable/type is used anywhere, produce a warning.
-#define GOOGLE_ATTRIBUTE_DEPRECATED __attribute__((deprecated))
-#else
-#define GOOGLE_ATTRIBUTE_DEPRECATED
-#endif
-#endif
-
-#ifndef GOOGLE_PREDICT_TRUE
-#ifdef __GNUC__
-// Provided at least since GCC 3.0.
-#define GOOGLE_PREDICT_TRUE(x) (__builtin_expect(!!(x), 1))
-#else
-#define GOOGLE_PREDICT_TRUE(x) (x)
-#endif
-#endif
-
-#ifndef GOOGLE_PREDICT_FALSE
-#ifdef __GNUC__
-// Provided at least since GCC 3.0.
-#define GOOGLE_PREDICT_FALSE(x) (__builtin_expect(x, 0))
-#else
-#define GOOGLE_PREDICT_FALSE(x) (x)
-#endif
-#endif
-
-// Delimits a block of code which may write to memory which is simultaneously
-// written by other threads, but which has been determined to be thread-safe
-// (e.g. because it is an idempotent write).
-#ifndef GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN
-#define GOOGLE_SAFE_CONCURRENT_WRITES_BEGIN()
-#endif
-#ifndef GOOGLE_SAFE_CONCURRENT_WRITES_END
-#define GOOGLE_SAFE_CONCURRENT_WRITES_END()
-#endif
-
-#if defined(__clang__) && defined(__has_cpp_attribute) \
-    && !defined(GOOGLE_PROTOBUF_OS_APPLE)
-# if defined(GOOGLE_PROTOBUF_OS_NACL) || defined(EMSCRIPTEN) || \
-     __has_cpp_attribute(clang::fallthrough)
-#  define GOOGLE_FALLTHROUGH_INTENDED [[clang::fallthrough]]
-# endif
-#endif
-
-#ifndef GOOGLE_FALLTHROUGH_INTENDED
-# define GOOGLE_FALLTHROUGH_INTENDED
-#endif
-
-#define GOOGLE_GUARDED_BY(x)
-#define GOOGLE_ATTRIBUTE_COLD
-
-// x86 and x86-64 can perform unaligned loads/stores directly.
-#if defined(_M_X64) || defined(__x86_64__) || \
-    defined(_M_IX86) || defined(__i386__)
-
-#define GOOGLE_UNALIGNED_LOAD16(_p) (*reinterpret_cast<const uint16 *>(_p))
-#define GOOGLE_UNALIGNED_LOAD32(_p) (*reinterpret_cast<const uint32 *>(_p))
-#define GOOGLE_UNALIGNED_LOAD64(_p) (*reinterpret_cast<const uint64 *>(_p))
-
-#define GOOGLE_UNALIGNED_STORE16(_p, _val) (*reinterpret_cast<uint16 *>(_p) = (_val))
-#define GOOGLE_UNALIGNED_STORE32(_p, _val) (*reinterpret_cast<uint32 *>(_p) = (_val))
-#define GOOGLE_UNALIGNED_STORE64(_p, _val) (*reinterpret_cast<uint64 *>(_p) = (_val))
-
-#else
-inline uint16 GOOGLE_UNALIGNED_LOAD16(const void *p) {
-  uint16 t;
-  memcpy(&t, p, sizeof t);
-  return t;
-}
-
-inline uint32 GOOGLE_UNALIGNED_LOAD32(const void *p) {
-  uint32 t;
-  memcpy(&t, p, sizeof t);
-  return t;
-}
-
-inline uint64 GOOGLE_UNALIGNED_LOAD64(const void *p) {
-  uint64 t;
-  memcpy(&t, p, sizeof t);
-  return t;
-}
-
-inline void GOOGLE_UNALIGNED_STORE16(void *p, uint16 v) {
-  memcpy(p, &v, sizeof v);
-}
-
-inline void GOOGLE_UNALIGNED_STORE32(void *p, uint32 v) {
-  memcpy(p, &v, sizeof v);
-}
-
-inline void GOOGLE_UNALIGNED_STORE64(void *p, uint64 v) {
-  memcpy(p, &v, sizeof v);
-}
-#endif
-
-#if defined(_MSC_VER)
-#define GOOGLE_THREAD_LOCAL __declspec(thread)
-#else
-#define GOOGLE_THREAD_LOCAL __thread
-#endif
-
-// The following guarantees declaration of the byte swap functions, and
-// defines __BYTE_ORDER for MSVC
-#ifdef _MSC_VER
-#define __BYTE_ORDER __LITTLE_ENDIAN
-#define bswap_16(x) _byteswap_ushort(x)
-#define bswap_32(x) _byteswap_ulong(x)
-#define bswap_64(x) _byteswap_uint64(x)
-
-#elif defined(__APPLE__)
-// Mac OS X / Darwin features
-#define bswap_16(x) OSSwapInt16(x)
-#define bswap_32(x) OSSwapInt32(x)
-#define bswap_64(x) OSSwapInt64(x)
-
-#elif !defined(__GLIBC__) && !defined(__CYGWIN__)
-
-static inline uint16 bswap_16(uint16 x) {
-  return static_cast<uint16>(((x & 0xFF) << 8) | ((x & 0xFF00) >> 8));
-}
-#define bswap_16(x) bswap_16(x)
-static inline uint32 bswap_32(uint32 x) {
-  return (((x & 0xFF) << 24) |
-          ((x & 0xFF00) << 8) |
-          ((x & 0xFF0000) >> 8) |
-          ((x & 0xFF000000) >> 24));
-}
-#define bswap_32(x) bswap_32(x)
-static inline uint64 bswap_64(uint64 x) {
-  return (((x & GOOGLE_ULONGLONG(0xFF)) << 56) |
-          ((x & GOOGLE_ULONGLONG(0xFF00)) << 40) |
-          ((x & GOOGLE_ULONGLONG(0xFF0000)) << 24) |
-          ((x & GOOGLE_ULONGLONG(0xFF000000)) << 8) |
-          ((x & GOOGLE_ULONGLONG(0xFF00000000)) >> 8) |
-          ((x & GOOGLE_ULONGLONG(0xFF0000000000)) >> 24) |
-          ((x & GOOGLE_ULONGLONG(0xFF000000000000)) >> 40) |
-          ((x & GOOGLE_ULONGLONG(0xFF00000000000000)) >> 56));
-}
-#define bswap_64(x) bswap_64(x)
-
-#endif
-
-// ===================================================================
-// from google3/util/endian/endian.h
-LIBPROTOBUF_EXPORT uint32 ghtonl(uint32 x);
-
-class BigEndian {
- public:
-#ifdef PROTOBUF_LITTLE_ENDIAN
-
-  static uint16 FromHost16(uint16 x) { return bswap_16(x); }
-  static uint16 ToHost16(uint16 x) { return bswap_16(x); }
-
-  static uint32 FromHost32(uint32 x) { return bswap_32(x); }
-  static uint32 ToHost32(uint32 x) { return bswap_32(x); }
-
-  static uint64 FromHost64(uint64 x) { return bswap_64(x); }
-  static uint64 ToHost64(uint64 x) { return bswap_64(x); }
-
-  static bool IsLittleEndian() { return true; }
-
-#else
-
-  static uint16 FromHost16(uint16 x) { return x; }
-  static uint16 ToHost16(uint16 x) { return x; }
-
-  static uint32 FromHost32(uint32 x) { return x; }
-  static uint32 ToHost32(uint32 x) { return x; }
-
-  static uint64 FromHost64(uint64 x) { return x; }
-  static uint64 ToHost64(uint64 x) { return x; }
-
-  static bool IsLittleEndian() { return false; }
-
-#endif /* ENDIAN */
-
-  // Functions to do unaligned loads and stores in big-endian order.
-  static uint16 Load16(const void *p) {
-    return ToHost16(GOOGLE_UNALIGNED_LOAD16(p));
-  }
-
-  static void Store16(void *p, uint16 v) {
-    GOOGLE_UNALIGNED_STORE16(p, FromHost16(v));
-  }
-
-  static uint32 Load32(const void *p) {
-    return ToHost32(GOOGLE_UNALIGNED_LOAD32(p));
-  }
-
-  static void Store32(void *p, uint32 v) {
-    GOOGLE_UNALIGNED_STORE32(p, FromHost32(v));
-  }
-
-  static uint64 Load64(const void *p) {
-    return ToHost64(GOOGLE_UNALIGNED_LOAD64(p));
-  }
-
-  static void Store64(void *p, uint64 v) {
-    GOOGLE_UNALIGNED_STORE64(p, FromHost64(v));
-  }
-};
-
-
-}  // namespace protobuf
-}  // namespace google
-
-#endif  // GOOGLE_PROTOBUF_STUBS_PORT_H_