[Chrome OS] Plumb new error codes from SignedSettings to consumers of the API

chrome/browser/chromeos/proxy_config_service_impl.h

Index: chrome/browser/chromeos/proxy_config_service_impl.h
diff --git a/chrome/browser/chromeos/proxy_config_service_impl.h b/chrome/browser/chromeos/proxy_config_service_impl.h
index 8c42bd775011ddf136380b53e70226ae8f74b48f..2e605a86640814993014193134177cd308381faf 100644
--- a/chrome/browser/chromeos/proxy_config_service_impl.h
+++ b/chrome/browser/chromeos/proxy_config_service_impl.h
@@ -190,9 +190,10 @@ class ProxyConfigServiceImpl
   bool UISetProxyConfigBypassRules(const net::ProxyBypassRules& bypass_rules);
 
   // Implementation for SignedSettings::Delegate
-  virtual void OnSettingsOpSucceeded(bool value);
-  virtual void OnSettingsOpSucceeded(std::string value);
-  virtual void OnSettingsOpFailed(SignedSettings::FailureCode code);
+  virtual void OnSettingsOpCompleted(SignedSettings::ReturnCode code,
+                                     std::string value);
+  virtual void OnSettingsOpCompleted(SignedSettings::ReturnCode code,
+                                     bool value);
 
  private:
   friend class base::RefCountedThreadSafe<ProxyConfigServiceImpl>;