Keep only base/extractor.[cc|h].

goopdate/model_object.h

-// Copyright 2009 Google Inc.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-//      http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-// ========================================================================
-
-// Defines the base class of classes in the model. Provides access to the root
-// of the model.
-
-#ifndef OMAHA_GOOPDATE_MODEL_OBJECT_H_
-#define OMAHA_GOOPDATE_MODEL_OBJECT_H_
-
-#include <windows.h>
-#include "base/basictypes.h"
-#include "omaha/base/debug.h"
-#include "omaha/base/utils.h"
-
-namespace omaha {
-
-class Model;
-
-bool IsModelLockedByCaller(const Model* model);
-
-class ModelObject {
- public:
-
-  Model* model() {
-    return omaha::interlocked_exchange_pointer(&model_, model_);
-  }
-
-  const Model* model() const {
-    return omaha::interlocked_exchange_pointer(&model_, model_);
-  }
-
- protected:
-
-  explicit ModelObject(Model* model) : model_(NULL) {
-    ASSERT1(model);
-    ASSERT1(IsModelLockedByCaller(model));
-
-    omaha::interlocked_exchange_pointer(&model_, model);
-  }
-
-  ~ModelObject() {
-    omaha::interlocked_exchange_pointer(&model_, static_cast<Model*>(NULL));
-  }
-
- private:
-
-  // C++ root of the object model. Not owned by this instance.
-  mutable Model* volatile model_;
-
-  DISALLOW_COPY_AND_ASSIGN(ModelObject);
-};
-
-}  // namespace omaha
-
-#endif  // OMAHA_GOOPDATE_MODEL_OBJECT_H_
-