Update from https://crrev.com/316786

tools/relocation_packer/src/elf_traits.h

 // Copyright 2014 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.
 
 // Target-specific ELF type traits.
 
 #ifndef TOOLS_RELOCATION_PACKER_SRC_ELF_TRAITS_H_
 #define TOOLS_RELOCATION_PACKER_SRC_ELF_TRAITS_H_
 
 #include "elf.h"
@@ skipping 39 matching lines @@
   typedef Elf32_Xword Xword;
 
   static inline Ehdr* getehdr(Elf* elf) { return elf32_getehdr(elf); }
   static inline Phdr* getphdr(Elf* elf) { return elf32_getphdr(elf); }
   static inline Shdr* getshdr(Elf_Scn* scn) { return elf32_getshdr(scn); }
 
   enum { kMachine = EM_ARM };
   enum { kFileClass = ELFCLASS32 };
   enum { kRelativeRelocationCode = R_ARM_RELATIVE };
   enum { kNoRelocationCode = R_ARM_NONE };
-  enum { kGnuStackSegmentAlignment = 0 };
 
   static inline const char* Machine() { return "ARM"; }
 
 # define ELF_R_SYM(val) ELF32_R_SYM(val)
 # define ELF_R_TYPE(val) ELF32_R_TYPE(val)
 # define ELF_R_INFO(sym, type) ELF32_R_INFO(sym, type)
 # define ELF_ST_TYPE(val) ELF32_ST_TYPE(val)
 };
 
 #elif defined(TARGET_ARM64)
@@ skipping 13 matching lines @@
   typedef Elf64_Xword Xword;
 
   static inline Ehdr* getehdr(Elf* elf) { return elf64_getehdr(elf); }
   static inline Phdr* getphdr(Elf* elf) { return elf64_getphdr(elf); }
   static inline Shdr* getshdr(Elf_Scn* scn) { return elf64_getshdr(scn); }
 
   enum { kMachine = EM_AARCH64 };
   enum { kFileClass = ELFCLASS64 };
   enum { kRelativeRelocationCode = R_AARCH64_RELATIVE };
   enum { kNoRelocationCode = R_AARCH64_NONE };
-  enum { kGnuStackSegmentAlignment = 16 };
 
   static inline const char* Machine() { return "ARM64"; }
 
 # define ELF_R_SYM(val) ELF64_R_SYM(val)
 # define ELF_R_TYPE(val) ELF64_R_TYPE(val)
 # define ELF_R_INFO(sym, type) ELF64_R_INFO(sym, type)
 # define ELF_ST_TYPE(val) ELF64_ST_TYPE(val)
 };
 #endif
 
 #endif  // TOOLS_RELOCATION_PACKER_SRC_ELF_TRAITS_H_