Remove use of private ValueAnimator api

Change-Id: I455edcd17bda83ab51c2c04fa40e66097a4d6975
diff --git a/src/com/android/launcher2/Folder.java b/src/com/android/launcher2/Folder.java
index 53c3046..84c815e 100644
--- a/src/com/android/launcher2/Folder.java
+++ b/src/com/android/launcher2/Folder.java
@@ -421,7 +421,7 @@
         PropertyValuesHolder scaleX = PropertyValuesHolder.ofFloat("scaleX", 1.0f);
         PropertyValuesHolder scaleY = PropertyValuesHolder.ofFloat("scaleY", 1.0f);
         final ObjectAnimator oa = mOpenCloseAnimator =
-            ObjectAnimator.ofPropertyValuesHolder(this, alpha, scaleX, scaleY);
+            LauncherAnimUtils.ofPropertyValuesHolder(this, alpha, scaleX, scaleY);
 
         oa.addListener(new AnimatorListenerAdapter() {
             @Override
@@ -479,7 +479,7 @@
         PropertyValuesHolder scaleX = PropertyValuesHolder.ofFloat("scaleX", 0.9f);
         PropertyValuesHolder scaleY = PropertyValuesHolder.ofFloat("scaleY", 0.9f);
         final ObjectAnimator oa = mOpenCloseAnimator =
-                ObjectAnimator.ofPropertyValuesHolder(this, alpha, scaleX, scaleY);
+                LauncherAnimUtils.ofPropertyValuesHolder(this, alpha, scaleX, scaleY);
 
         oa.addListener(new AnimatorListenerAdapter() {
             @Override