Cleaning up the api

Change-Id: I86632cfde07216be7623177516710db5d9a57522
diff --git a/graphics/java/android/renderscript/ProgramRaster.java b/graphics/java/android/renderscript/ProgramRaster.java
index fd89b6e..791dac8 100644
--- a/graphics/java/android/renderscript/ProgramRaster.java
+++ b/graphics/java/android/renderscript/ProgramRaster.java
@@ -55,13 +55,13 @@
         mCullMode = CullMode.BACK;
     }
 
-    public void setLineWidth(float w) {
+    void setLineWidth(float w) {
         mRS.validate();
         mLineWidth = w;
         mRS.nProgramRasterSetLineWidth(mID, w);
     }
 
-    public void setCullMode(CullMode m) {
+    void setCullMode(CullMode m) {
         mRS.validate();
         mCullMode = m;
         mRS.nProgramRasterSetCullMode(mID, m.mID);