Alter the design of the bootstrap sandbox to only take over the bootstrap port of children when nec…

content/browser/child_process_launcher.cc

Index: content/browser/child_process_launcher.cc
diff --git a/content/browser/child_process_launcher.cc b/content/browser/child_process_launcher.cc
index 9ead67b615a467adeaef1927d867fc57bdae80fd..b49a98201e129be66b14f5a5962482f299ba6c9e 100644
--- a/content/browser/child_process_launcher.cc
+++ b/content/browser/child_process_launcher.cc
@@ -288,6 +288,8 @@ class ChildProcessLauncher::Context
       const int bootstrap_sandbox_policy = delegate->GetSandboxType();
       if (ShouldEnableBootstrapSandbox() &&
           bootstrap_sandbox_policy != SANDBOX_TYPE_INVALID) {
+        options.replacement_bootstrap_name =
+            GetBootstrapSandbox()->server_bootstrap_name();
         GetBootstrapSandbox()->PrepareToForkWithPolicy(
             bootstrap_sandbox_policy);
       }