AU: Start an UpdateAttempter unit test suite.

action_processor_mock.h

Index: action_processor_mock.h
diff --git a/action_processor_mock.h b/action_processor_mock.h
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+// Copyright (c) 2010 The Chromium OS 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 CHROMEOS_PLATFORM_UPDATE_ENGINE_ACTION_PROCESSOR_MOCK_H__
+#define CHROMEOS_PLATFORM_UPDATE_ENGINE_ACTION_PROCESSOR_MOCK_H__
+
+#include <gmock/gmock.h>
+
+#include "update_engine/action.h"
+
+namespace chromeos_update_engine {
+
+class ActionProcessorMock : public ActionProcessor {
+ public:
+  MOCK_METHOD0(StartProcessing, void());
+  MOCK_METHOD1(EnqueueAction, void(AbstractAction* action));
+};
+
+}  // namespace chromeos_update_engine
+
+#endif  // CHROMEOS_PLATFORM_UPDATE_ENGINE_ACTION_PROCESSOR_MOCK_H__