Doris Liu 12abdeb3c7 Check RenderNode's owning view before attaching animators
-Only add animators to a RenderNode when its owning view is attached
-When changing animator's target RenderNode, remove the animator from
 the old target RenderNode that it's currently running on, if any.
Bug: 27141983
Bug: 27145149
Change-Id: I9c9592382d64ecc0390f7ec743a59ce1ad7d9798
2016-02-16 14:25:48 -08:00
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