Update from https://crrev.com/303153

base/process/kill_posix.cc

Index: base/process/kill_posix.cc
diff --git a/base/process/kill_posix.cc b/base/process/kill_posix.cc
index b02453c358cbe141e2d88945759bed53bbc38173..d17e9907626125849ee97495e4b4cb24a00e257c 100644
--- a/base/process/kill_posix.cc
+++ b/base/process/kill_posix.cc
@@ -22,7 +22,7 @@ namespace base {
 
 namespace {
 
-#if !defined(__native_client_nonsfi__)
+#if !defined(OS_NACL_NONSFI)
 bool WaitpidWithTimeout(ProcessHandle handle,
                         int* status,
                         base::TimeDelta wait) {
@@ -84,7 +84,7 @@ bool WaitpidWithTimeout(ProcessHandle handle,
 
   return ret_pid > 0;
 }
-#endif  // !defined(__native_client_nonsfi__)
+#endif  // !defined(OS_NACL_NONSFI)
 
 TerminationStatus GetTerminationStatusImpl(ProcessHandle handle,
                                            bool can_block,
@@ -132,7 +132,7 @@ TerminationStatus GetTerminationStatusImpl(ProcessHandle handle,
 
 }  // namespace
 
-#if !defined(__native_client_nonsfi__)
+#if !defined(OS_NACL_NONSFI)
 // Attempts to kill the process identified by the given process
 // entry structure.  Ignores specified exit_code; posix can't force that.
 // Returns true if this is successful, false otherwise.
@@ -194,7 +194,7 @@ bool KillProcessGroup(ProcessHandle process_group_id) {
     DPLOG(ERROR) << "Unable to terminate process group " << process_group_id;
   return result;
 }
-#endif  // !defined(__native_client_nonsfi__)
+#endif  // !defined(OS_NACL_NONSFI)
 
 TerminationStatus GetTerminationStatus(ProcessHandle handle, int* exit_code) {
   return GetTerminationStatusImpl(handle, false /* can_block */, exit_code);
@@ -210,7 +210,7 @@ TerminationStatus GetKnownDeadTerminationStatus(ProcessHandle handle,
   return GetTerminationStatusImpl(handle, true /* can_block */, exit_code);
 }
 
-#if !defined(__native_client_nonsfi__)
+#if !defined(OS_NACL_NONSFI)
 bool WaitForExitCode(ProcessHandle handle, int* exit_code) {
   int status;
   if (HANDLE_EINTR(waitpid(handle, &status, 0)) == -1) {
@@ -483,6 +483,6 @@ void EnsureProcessGetsReaped(ProcessHandle process) {
 }
 
 #endif  // !defined(OS_MACOSX)
-#endif  // !defined(__native_client_nonsfi__)
+#endif  // !defined(OS_NACL_NONSFI)
 
 }  // namespace base