Call SetApplicationIsDaemon() in V2 sandbox.

content/common/sandbox_init_mac.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_COMMON_SANDBOX_INIT_MAC_H_
 #define CONTENT_COMMON_SANDBOX_INIT_MAC_H_
 
+#include "base/callback_forward.h"
+
 namespace content {
 
 // Initialize the sandbox for renderer, gpu, utility, worker, and plugin
 // processes, depending on the command line flags. For the browser process which
 // is not sandboxed, this call is a no-op.
 // Returns true if the sandbox was initialized succesfully, false if an error
 // occurred.  If process_type isn't one that needs sandboxing, true is always
 // returned.
 bool InitializeSandbox();
 
+// Initializes the sandbox, as described above, but executes the callback after
+// warmup and before initialization.
+bool InitializeSandboxWithPostWarmupHook(base::OnceClosure hook);
+
 }  // namespace content
 
 #endif  // CONTENT_COMMON_SANDBOX_INIT_MAC_H_