Cross Reference: /frameworks/support/v17/leanback/res/transition-v21

`Name`	`Date`	`Size`
Up to higher level directory
`lb_enter_transition.xml`	03-Dec-2014	`908`
`lb_return_transition.xml`	03-Dec-2014	`908`
`lb_shared_element_enter_transition.xml`	03-Dec-2014	`1.2K`
`lb_shared_element_return_transition.xml`	03-Dec-2014	`1.2K`

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