Revert "Revert "Check RenderNode's owning view before attaching animators""

This reverts commit eb40178af3b7c8d925eaf6c1aa0bef739c8ea47e.

Change-Id: I6838ecb35b50847746ee66ac204f14eb5f579b91
diff --git a/libs/hwui/RenderNode.h b/libs/hwui/RenderNode.h
index f248de54..e037645 100644
--- a/libs/hwui/RenderNode.h
+++ b/libs/hwui/RenderNode.h
@@ -187,6 +187,12 @@
 
     // UI thread only!
     ANDROID_API void addAnimator(const sp<BaseRenderNodeAnimator>& animator);
+    void removeAnimator(const sp<BaseRenderNodeAnimator>& animator);
+
+    // This can only happen during pushStaging()
+    void onAnimatorTargetChanged(BaseRenderNodeAnimator* animator) {
+        mAnimatorManager.onAnimatorTargetChanged(animator);
+    }
 
     AnimatorManager& animators() { return mAnimatorManager; }