Update from https://crrev.com/316786

sandbox/linux/system_headers/android_mips_ucontext.h

Index: sandbox/linux/system_headers/android_mips_ucontext.h
diff --git a/sandbox/linux/services/android_mips_ucontext.h b/sandbox/linux/system_headers/android_mips_ucontext.h
similarity index 86%
rename from sandbox/linux/services/android_mips_ucontext.h
rename to sandbox/linux/system_headers/android_mips_ucontext.h
index e23f1a769401bef54639e93a0b83aa2979b99bf5..ec3aa63a3602a61ed00d741bdea63cd7925630ec 100644
--- a/sandbox/linux/services/android_mips_ucontext.h
+++ b/sandbox/linux/system_headers/android_mips_ucontext.h
@@ -2,8 +2,8 @@
 // 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.
@@ -48,4 +48,4 @@ typedef struct ucontext {
 #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_