don't try to adjust oom score with the suid sandbox if there is no such binary

content/browser/zygote_host/zygote_host_impl_linux.cc

Index: content/browser/zygote_host/zygote_host_impl_linux.cc
diff --git a/content/browser/zygote_host/zygote_host_impl_linux.cc b/content/browser/zygote_host/zygote_host_impl_linux.cc
index a11d51faea3c9b2fb85e9d337c09e0b0a76f404e..a736fb04e30def930bc0f4412027656f0f53b377 100644
--- a/content/browser/zygote_host/zygote_host_impl_linux.cc
+++ b/content/browser/zygote_host/zygote_host_impl_linux.cc
@@ -160,7 +160,8 @@ void ZygoteHostImpl::Init(const std::string& sandbox_cmd) {
   // or namespace sandbox. This is needed beacuse the processes are
   // non-dumpable, so /proc/pid/oom_score_adj can only be written by root.
   use_suid_sandbox_for_adj_oom_score_ =
-      using_namespace_sandbox || using_suid_sandbox;
+      !sandbox_binary_.empty() &&
+      (using_namespace_sandbox || using_suid_sandbox);
 
   // Start up the sandbox host process and get the file descriptor for the
   // renderers to talk to it.