Stop using deprecated Canvas APIs.

Bug: 73777445
Test: compile
Change-Id: Ic0a1f4ebc10ba46229fd97408c052c0b450b4945
diff --git a/src/com/android/launcher3/folder/PreviewBackground.java b/src/com/android/launcher3/folder/PreviewBackground.java
index 285aef8..a0912a4 100644
--- a/src/com/android/launcher3/folder/PreviewBackground.java
+++ b/src/com/android/launcher3/folder/PreviewBackground.java
@@ -227,11 +227,10 @@
         final int saveCount;
         if (canvas.isHardwareAccelerated()) {
             saveCount = canvas.saveLayer(offsetX - mStrokeWidth, offsetY,
-                    offsetX + radius + shadowRadius, offsetY + shadowRadius + shadowRadius,
-                    null, Canvas.CLIP_TO_LAYER_SAVE_FLAG | Canvas.HAS_ALPHA_LAYER_SAVE_FLAG);
+                    offsetX + radius + shadowRadius, offsetY + shadowRadius + shadowRadius, null);
 
         } else {
-            saveCount = canvas.save(Canvas.CLIP_SAVE_FLAG);
+            saveCount = canvas.save();
             canvas.clipPath(getClipPath(), Region.Op.DIFFERENCE);
         }