[RenderScript] hide Allocation.copyToFieldPacker()

bug: 21027883

Change-Id: I122392bc5206ff19ea52712576d7f363e5915231
diff --git a/api/current.txt b/api/current.txt
index ef2c4da..7f91ceb 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -27277,7 +27277,6 @@
     method public void copyTo(short[]);
     method public void copyTo(int[]);
     method public void copyTo(float[]);
-    method public void copyToFieldPacker(int, int, int, int, android.renderscript.FieldPacker);
     method public static android.renderscript.Allocation createCubemapFromBitmap(android.renderscript.RenderScript, android.graphics.Bitmap, android.renderscript.Allocation.MipmapControl, int);
     method public static android.renderscript.Allocation createCubemapFromBitmap(android.renderscript.RenderScript, android.graphics.Bitmap);
     method public static android.renderscript.Allocation createCubemapFromCubeFaces(android.renderscript.RenderScript, android.graphics.Bitmap, android.graphics.Bitmap, android.graphics.Bitmap, android.graphics.Bitmap, android.graphics.Bitmap, android.graphics.Bitmap, android.renderscript.Allocation.MipmapControl, int);
diff --git a/api/system-current.txt b/api/system-current.txt
index 4508b20..40a4ffb 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -29291,7 +29291,6 @@
     method public void copyTo(short[]);
     method public void copyTo(int[]);
     method public void copyTo(float[]);
-    method public void copyToFieldPacker(int, int, int, int, android.renderscript.FieldPacker);
     method public static android.renderscript.Allocation createCubemapFromBitmap(android.renderscript.RenderScript, android.graphics.Bitmap, android.renderscript.Allocation.MipmapControl, int);
     method public static android.renderscript.Allocation createCubemapFromBitmap(android.renderscript.RenderScript, android.graphics.Bitmap);
     method public static android.renderscript.Allocation createCubemapFromCubeFaces(android.renderscript.RenderScript, android.graphics.Bitmap, android.graphics.Bitmap, android.graphics.Bitmap, android.graphics.Bitmap, android.graphics.Bitmap, android.graphics.Bitmap, android.renderscript.Allocation.MipmapControl, int);
diff --git a/rs/java/android/renderscript/Allocation.java b/rs/java/android/renderscript/Allocation.java
index 3b61f9d..70a5821 100644
--- a/rs/java/android/renderscript/Allocation.java
+++ b/rs/java/android/renderscript/Allocation.java
@@ -1422,6 +1422,8 @@
     }
 
     /**
+     * @hide
+     *
      * This is only intended to be used by auto-generated code reflected from
      * the RenderScript script files and should not be used by developers.
      *