Rewrite simple uses of base::ListValue::Append(base::Value*) on CrOS.

chrome/browser/chromeos/proxy_cros_settings_parser.cc

Index: chrome/browser/chromeos/proxy_cros_settings_parser.cc
diff --git a/chrome/browser/chromeos/proxy_cros_settings_parser.cc b/chrome/browser/chromeos/proxy_cros_settings_parser.cc
index 1f755210715bd8b1df3ca85be49f4fe10d4e206a..f6969d64ce540e17ab3a406c78d9118f5dce114d 100644
--- a/chrome/browser/chromeos/proxy_cros_settings_parser.cc
+++ b/chrome/browser/chromeos/proxy_cros_settings_parser.cc
@@ -358,7 +358,7 @@ bool GetProxyPrefValue(const UIProxyConfigService& config_service,
     base::ListValue* list =  new base::ListValue();
     net::ProxyBypassRules::RuleList bypass_rules = config.bypass_rules.rules();
     for (size_t x = 0; x < bypass_rules.size(); x++)
-      list->Append(new base::StringValue(bypass_rules[x]->ToString()));
+      list->AppendString(bypass_rules[x]->ToString());
     data = list;
   } else {
     *out_value = NULL;