Skip to the end of the folder open animation in battery saver mode.

Bug: 25666809
Change-Id: I867d56a34fc5e0ad6aaabd8b6df47be05ec31966
diff --git a/src/com/android/launcher3/Launcher.java b/src/com/android/launcher3/Launcher.java
index 9824e3e..658272f 100644
--- a/src/com/android/launcher3/Launcher.java
+++ b/src/com/android/launcher3/Launcher.java
@@ -3125,6 +3125,10 @@
         }
         oa.setDuration(getResources().getInteger(R.integer.config_folderExpandDuration));
         oa.start();
+        if (Utilities.isPowerSaverOn(this)) {
+            // Animations are disabled in battery saver mode, so just skip to the end state.
+            oa.end();
+        }
     }
 
     private void shrinkAndFadeInFolderIcon(final FolderIcon fi, boolean animate) {