Implement device token fetcher

chrome/browser/policy/mock_device_management_backend.h

Index: chrome/browser/policy/mock_device_management_backend.h
diff --git a/chrome/browser/policy/mock_device_management_backend.h b/chrome/browser/policy/mock_device_management_backend.h
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+++ b/chrome/browser/policy/mock_device_management_backend.h
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+// Copyright (c) 2010 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_POLICY_MOCK_DEVICE_MANAGEMENT_BACKEND_H_
+#define CHROME_BROWSER_POLICY_MOCK_DEVICE_MANAGEMENT_BACKEND_H_
+#pragma once
+
+#include <string>
+
+#include "chrome/browser/policy/device_management_backend.h"
+
+namespace policy {
+
+namespace em = enterprise_management;
+
+// Useful for unit testing when a server-based backend isn't
+// available. Simulates both successful and failed requests to the device
+// management server.
+class MockDeviceManagementBackend
+    : public DeviceManagementBackend {
+ public:
+  MockDeviceManagementBackend();
+  virtual ~MockDeviceManagementBackend() {}
+
+  void SetFailure(bool failure) { failure_ = failure; }
+
+  // DeviceManagementBackend method overrides:
+  virtual void ProcessRegisterRequest(
+      const std::string& auth_token,
+      const std::string& device_id,
+      const em::DeviceRegisterRequest& request,
+      DeviceRegisterResponseDelegate* delegate);
+
+  virtual void ProcessUnregisterRequest(
+      const std::string& device_management_token,
+      const em::DeviceUnregisterRequest& request,
+      DeviceUnregisterResponseDelegate* delegate);
+
+  virtual void ProcessPolicyRequest(
+      const std::string& device_management_token,
+      const em::DevicePolicyRequest& request,
+      DevicePolicyResponseDelegate* delegate);
+
+ private:
+  bool failure_;
+  DISALLOW_COPY_AND_ASSIGN(MockDeviceManagementBackend);
+};
+
+}  // namespace policy
+
+#endif  // CHROME_BROWSER_POLICY_MOCK_DEVICE_MANAGEMENT_BACKEND_H_