Remove use of deprecated base::ListValue::Append(Value*) overload in //chrome/browser/chromeos

chrome/browser/chromeos/arc/arc_policy_bridge.cc

Index: chrome/browser/chromeos/arc/arc_policy_bridge.cc
diff --git a/chrome/browser/chromeos/arc/arc_policy_bridge.cc b/chrome/browser/chromeos/arc/arc_policy_bridge.cc
index cc2cb8ae285b59abfc9dcb6587062f33f8b146fd..def83645bf26af97a782fe870ab485ef02e7a727 100644
--- a/chrome/browser/chromeos/arc/arc_policy_bridge.cc
+++ b/chrome/browser/chromeos/arc/arc_policy_bridge.cc
@@ -174,7 +174,7 @@ void AddOncCaCertsToPolicies(const policy::PolicyMap& policy_map,
 
     base::DictionaryValue data;
     data.SetString("X509", x509_data);
-    ca_certs->Append(data.DeepCopy());
+    ca_certs->Append(data.CreateDeepCopy());
   }
   filtered_policies->Set(kArcCaCerts, std::move(ca_certs));
 }