Remove experimental gating for LayoutAnimation on Android

Reviewed By: sahrens

Differential Revision: D14658087

fbshipit-source-id: 378ef4a5c5336d428b5045772d094a297b2767c7

ReactAndroid/src/main/java/com/facebook/react/uimanager/NativeViewHierarchyManager.java

@@ -74,7 +74,6 @@ public class NativeViewHierarchyManager {
   private final LayoutAnimationController mLayoutAnimator = new LayoutAnimationController();
   private final Map<Integer, SparseIntArray> mTagsToPendingIndicesToDelete = new HashMap<>();
 
-  private boolean mLayoutAnimationEnabled;
   private PopupMenu mPopupMenu;
 
   public NativeViewHierarchyManager(ViewManagerRegistry viewManagers) {
@@ -106,10 +105,6 @@ public class NativeViewHierarchyManager {
     return viewManager;
   }
 
-  public void setLayoutAnimationEnabled(boolean enabled) {
-    mLayoutAnimationEnabled = enabled;
-  }
-
   public synchronized void updateInstanceHandle(int tag, long instanceHandle) {
     UiThreadUtil.assertOnUiThread();
 
@@ -225,8 +220,7 @@ public class NativeViewHierarchyManager {
   }
 
   private void updateLayout(View viewToUpdate, int x, int y, int width, int height) {
-    if (mLayoutAnimationEnabled &&
-        mLayoutAnimator.shouldAnimateLayout(viewToUpdate)) {
+    if (mLayoutAnimator.shouldAnimateLayout(viewToUpdate)) {
       mLayoutAnimator.applyLayoutUpdate(viewToUpdate, x, y, width, height);
     } else {
       viewToUpdate.layout(x, y, x + width, y + height);
@@ -433,8 +427,7 @@ public class NativeViewHierarchyManager {
         int normalizedIndexToRemove = normalizeIndex(indexToRemove, pendingIndicesToDelete);
         View viewToRemove = viewManager.getChildAt(viewToManage, normalizedIndexToRemove);
 
-        if (mLayoutAnimationEnabled &&
-            mLayoutAnimator.shouldAnimateLayout(viewToRemove) &&
+        if (mLayoutAnimator.shouldAnimateLayout(viewToRemove) &&
             arrayContains(tagsToDelete, viewToRemove.getId())) {
           // The view will be removed and dropped by the 'delete' layout animation
           // instead, so do nothing
@@ -483,8 +476,7 @@ public class NativeViewHierarchyManager {
                       tagsToDelete));
         }
 
-        if (mLayoutAnimationEnabled &&
-            mLayoutAnimator.shouldAnimateLayout(viewToDestroy)) {
+        if (mLayoutAnimator.shouldAnimateLayout(viewToDestroy)) {
           int updatedCount = pendingIndicesToDelete.get(indexToDelete, 0) + 1;
           pendingIndicesToDelete.put(indexToDelete, updatedCount);
           mLayoutAnimator.deleteView(