Make convertBitmap() protected so that Frames can use it.

bug:8633011
Change-Id: Ic731a1d906a6a388a22568f396111f8ca3b4475e
diff --git a/src/com/android/gallery3d/filtershow/filters/ImageFilterRS.java b/src/com/android/gallery3d/filtershow/filters/ImageFilterRS.java
index 0a45e83..cfbb560 100644
--- a/src/com/android/gallery3d/filtershow/filters/ImageFilterRS.java
+++ b/src/com/android/gallery3d/filtershow/filters/ImageFilterRS.java
@@ -141,7 +141,7 @@
         return bitmap;
     }
 
-    private static Allocation convertBitmap(Bitmap bitmap) {
+    protected static Allocation convertBitmap(Bitmap bitmap) {
         return Allocation.createFromBitmap(CachingPipeline.getRenderScriptContext(), bitmap,
                 Allocation.MipmapControl.MIPMAP_NONE,
                 Allocation.USAGE_SCRIPT | Allocation.USAGE_GRAPHICS_TEXTURE);