public:
MOCK_METHOD1(OnSourceAdded, void(int index));
MOCK_METHOD1(OnSourceRemoved, void(int index));
+ MOCK_METHOD2(OnSourceMoved, void(int old_index, int new_index));
MOCK_METHOD1(OnSourceNameChanged, void(int index));
MOCK_METHOD1(OnSourceThumbnailChanged, void(int index));
};