Update from https://crrev.com/316786

sandbox/linux/system_headers/android_mips_ucontext.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.
 
-#ifndef SANDBOX_LINUX_SERVICES_ANDROID_MIPS_UCONTEXT_H_
-#define SANDBOX_LINUX_SERVICES_ANDROID_MIPS_UCONTEXT_H_
+#ifndef SANDBOX_LINUX_SYSTEM_HEADERS_ANDROID_MIPS_UCONTEXT_H_
+#define SANDBOX_LINUX_SYSTEM_HEADERS_ANDROID_MIPS_UCONTEXT_H_
 
 // This is mostly copied from breakpad (common/android/include/sys/ucontext.h),
 // except we do use sigset_t for uc_sigmask instead of a custom type.
 #if !defined(__BIONIC_HAVE_UCONTEXT_T)
 // Ensure that 'stack_t' is defined.
 #include <asm/signal.h>
 
 // We also need greg_t for the sandbox, include it in this header as well.
 typedef unsigned long greg_t;
 
@@ skipping 24 matching lines @@
   stack_t uc_stack;
   mcontext_t uc_mcontext;
   sigset_t uc_sigmask;
   // Other fields are not used by Google Breakpad. Don't define them.
 } ucontext_t;
 
 #else
 #include <sys/ucontext.h>
 #endif  // __BIONIC_HAVE_UCONTEXT_T
 
-#endif  // SANDBOX_LINUX_SERVICES_ANDROID_MIPS_UCONTEXT_H_
+#endif  // SANDBOX_LINUX_SYSTEM_HEADERS_ANDROID_MIPS_UCONTEXT_H_