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

sandbox/mac/bootstrap_sandbox_unittest.mm

Index: sandbox/mac/bootstrap_sandbox_unittest.mm
diff --git a/sandbox/mac/bootstrap_sandbox_unittest.mm b/sandbox/mac/bootstrap_sandbox_unittest.mm
index f9068d687ba962b8c89e64ba178debbfae4566c6..85f627f10a3e490c3438679b42e240e709efbf5b 100644
--- a/sandbox/mac/bootstrap_sandbox_unittest.mm
+++ b/sandbox/mac/bootstrap_sandbox_unittest.mm
@@ -96,7 +96,9 @@ class BootstrapSandboxTest : public base::MultiProcessTest {
                           const char* child_name,
                           base::ProcessHandle* out_pid) {
     sandbox_->PrepareToForkWithPolicy(policy_id);
-    base::ProcessHandle pid = SpawnChild(child_name);
+    base::LaunchOptions options;
+    options.replacement_bootstrap_name = sandbox_->server_bootstrap_name();
+    base::ProcessHandle pid = SpawnChildWithOptions(child_name, options);
     ASSERT_GT(pid, 0);
     sandbox_->FinishedFork(pid);
     int code = 0;