Revert "third_party/protobuf: Update to HEAD (83d681ee2c)"

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

 // Protocol Buffers - Google's data interchange format
 // Copyright 2012 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.
@@ skipping 97 matching lines @@
 inline Atomic32 Release_CompareAndSwap(volatile Atomic32* ptr,
                                        Atomic32 old_value,
                                        Atomic32 new_value) {
   return NoBarrier_CompareAndSwap(ptr, old_value, new_value);
 }
 
 inline void NoBarrier_Store(volatile Atomic32* ptr, Atomic32 value) {
   *ptr = value;
 }
 
-inline void MemoryBarrierInternal() {
+inline void MemoryBarrier() {
   pLinuxKernelMemoryBarrier();
 }
 
 inline void Acquire_Store(volatile Atomic32* ptr, Atomic32 value) {
   *ptr = value;
-  MemoryBarrierInternal();
+  MemoryBarrier();
 }
 
 inline void Release_Store(volatile Atomic32* ptr, Atomic32 value) {
-  MemoryBarrierInternal();
+  MemoryBarrier();
   *ptr = value;
 }
 
 inline Atomic32 NoBarrier_Load(volatile const Atomic32* ptr) {
   return *ptr;
 }
 
 inline Atomic32 Acquire_Load(volatile const Atomic32* ptr) {
   Atomic32 value = *ptr;
-  MemoryBarrierInternal();
+  MemoryBarrier();
   return value;
 }
 
 inline Atomic32 Release_Load(volatile const Atomic32* ptr) {
-  MemoryBarrierInternal();
+  MemoryBarrier();
   return *ptr;
 }
 
 }  // namespace internal
 }  // namespace protobuf
 }  // namespace google
 
 #endif  // GOOGLE_PROTOBUF_ATOMICOPS_INTERNALS_ARM_GCC_H_