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

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

Index: third_party/protobuf/src/google/protobuf/stubs/atomicops_internals_generic_gcc.h
diff --git a/third_party/protobuf/src/google/protobuf/stubs/atomicops_internals_generic_gcc.h b/third_party/protobuf/src/google/protobuf/stubs/atomicops_internals_generic_gcc.h
deleted file mode 100644
index a0116a60ee796b3300bb412ecbe613ab9b307779..0000000000000000000000000000000000000000
--- a/third_party/protobuf/src/google/protobuf/stubs/atomicops_internals_generic_gcc.h
+++ /dev/null
@@ -1,137 +0,0 @@
-// Copyright 2013 Red Hat Inc.  All rights reserved.
-//
-// 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 Red Hat 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.
-
-// This file is an internal atomic implementation, use atomicops.h instead.
-
-#ifndef GOOGLE_PROTOBUF_ATOMICOPS_INTERNALS_GENERIC_GCC_H_
-#define GOOGLE_PROTOBUF_ATOMICOPS_INTERNALS_GENERIC_GCC_H_
-
-namespace google {
-namespace protobuf {
-namespace internal {
-
-inline Atomic32 NoBarrier_CompareAndSwap(volatile Atomic32* ptr,
-                                         Atomic32 old_value,
-                                         Atomic32 new_value) {
-  __atomic_compare_exchange_n(ptr, &old_value, new_value, true,
-                              __ATOMIC_RELAXED, __ATOMIC_RELAXED);
-  return old_value;
-}
-
-inline Atomic32 NoBarrier_AtomicExchange(volatile Atomic32* ptr,
-                                         Atomic32 new_value) {
-  return __atomic_exchange_n(ptr, new_value, __ATOMIC_RELAXED);
-}
-
-inline Atomic32 NoBarrier_AtomicIncrement(volatile Atomic32* ptr,
-                                          Atomic32 increment) {
-  return __atomic_add_fetch(ptr, increment, __ATOMIC_RELAXED);
-}
-
-inline Atomic32 Barrier_AtomicIncrement(volatile Atomic32* ptr,
-                                        Atomic32 increment) {
-  return __atomic_add_fetch(ptr, increment, __ATOMIC_SEQ_CST);
-}
-
-inline Atomic32 Acquire_CompareAndSwap(volatile Atomic32* ptr,
-                                       Atomic32 old_value,
-                                       Atomic32 new_value) {
-  __atomic_compare_exchange_n(ptr, &old_value, new_value, true,
-                              __ATOMIC_ACQUIRE, __ATOMIC_ACQUIRE);
-  return old_value;
-}
-
-inline Atomic32 Release_CompareAndSwap(volatile Atomic32* ptr,
-                                       Atomic32 old_value,
-                                       Atomic32 new_value) {
-  __atomic_compare_exchange_n(ptr, &old_value, new_value, true,
-                              __ATOMIC_RELEASE, __ATOMIC_ACQUIRE);
-  return old_value;
-}
-
-inline void NoBarrier_Store(volatile Atomic32* ptr, Atomic32 value) {
-  __atomic_store_n(ptr, value, __ATOMIC_RELAXED);
-}
-
-inline void MemoryBarrier() {
-  __sync_synchronize();
-}
-
-inline void Acquire_Store(volatile Atomic32* ptr, Atomic32 value) {
-  __atomic_store_n(ptr, value, __ATOMIC_SEQ_CST);
-}
-
-inline void Release_Store(volatile Atomic32* ptr, Atomic32 value) {
-  __atomic_store_n(ptr, value, __ATOMIC_RELEASE);
-}
-
-inline Atomic32 NoBarrier_Load(volatile const Atomic32* ptr) {
-  return __atomic_load_n(ptr, __ATOMIC_RELAXED);
-}
-
-inline Atomic32 Acquire_Load(volatile const Atomic32* ptr) {
-  return __atomic_load_n(ptr, __ATOMIC_ACQUIRE);
-}
-
-inline Atomic32 Release_Load(volatile const Atomic32* ptr) {
-  return __atomic_load_n(ptr, __ATOMIC_SEQ_CST);
-}
-
-#ifdef __LP64__
-
-inline void Release_Store(volatile Atomic64* ptr, Atomic64 value) {
-  __atomic_store_n(ptr, value, __ATOMIC_RELEASE);
-}
-
-inline Atomic64 Acquire_Load(volatile const Atomic64* ptr) {
-  return __atomic_load_n(ptr, __ATOMIC_ACQUIRE);
-}
-
-inline Atomic64 Acquire_CompareAndSwap(volatile Atomic64* ptr,
-                                       Atomic64 old_value,
-                                       Atomic64 new_value) {
-  __atomic_compare_exchange_n(ptr, &old_value, new_value, true,
-                              __ATOMIC_ACQUIRE, __ATOMIC_ACQUIRE);
-  return old_value;
-}
-
-inline Atomic64 NoBarrier_CompareAndSwap(volatile Atomic64* ptr,
-                                         Atomic64 old_value,
-                                         Atomic64 new_value) {
-  __atomic_compare_exchange_n(ptr, &old_value, new_value, true,
-                              __ATOMIC_RELAXED, __ATOMIC_RELAXED);
-  return old_value;
-}
-
-#endif // defined(__LP64__)
-
-}  // namespace internal
-}  // namespace protobuf
-}  // namespace google
-
-#endif  // GOOGLE_PROTOBUF_ATOMICOPS_INTERNALS_GENERIC_GCC_H_