Disable/enable echo for enterprise device.

chrome/browser/chromeos/extensions/echo_private_api.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 CHROME_BROWSER_CHROMEOS_EXTENSIONS_ECHO_PRIVATE_API_H_
 #define CHROME_BROWSER_CHROMEOS_EXTENSIONS_ECHO_PRIVATE_API_H_
 
 #include "base/compiler_specific.h"
 #include "chrome/browser/extensions/extension_function.h"
 
-class GetRegistrationCodeFunction : public SyncExtensionFunction {
+class GetRegistrationCodeFunction : public AsyncExtensionFunction {
  public:
   GetRegistrationCodeFunction();
 
  protected:
   virtual ~GetRegistrationCodeFunction();
   virtual bool RunImpl() OVERRIDE;
 
  private:
+  void GetRegistrationCode(const std::string& type);
   DECLARE_EXTENSION_FUNCTION("echoPrivate.getRegistrationCode",
                              ECHOPRIVATE_GETREGISTRATIONCODE)
 };
 
 class GetOobeTimestampFunction : public AsyncExtensionFunction {
  public:
   GetOobeTimestampFunction();
 
  protected:
   virtual ~GetOobeTimestampFunction();
   virtual bool RunImpl() OVERRIDE;
 
  private:
   bool GetOobeTimestampOnFileThread();
   DECLARE_EXTENSION_FUNCTION("echoPrivate.getOobeTimestamp",
                              ECHOPRIVATE_GETOOBETIMESTAMP)
 };
+
+class CheckAllowRedeemOffersFunction : public AsyncExtensionFunction {
+ public:
+  CheckAllowRedeemOffersFunction();
+
+ protected:
+  virtual ~CheckAllowRedeemOffersFunction();
+  virtual bool RunImpl() OVERRIDE;
+
+ private:
+  void CheckAllowRedeemOffers();
+  DECLARE_EXTENSION_FUNCTION("echoPrivate.checkAllowRedeemOffers",
+                             ECHOPRIVATE_CHECKALLOWREDEEMOFFERS)
+};
 #endif  // CHROME_BROWSER_CHROMEOS_EXTENSIONS_ECHO_PRIVATE_API_H_