hide setGammaForText, which is only used for calibrating new devices

api/current.xml

@@ -63542,21 +63542,6 @@
  visibility="public"
 >
 </method>
-<method name="setGammaForText"
- return="void"
- abstract="false"
- native="true"
- synchronized="false"
- static="true"
- final="false"
- deprecated="not deprecated"
- visibility="public"
->
-<parameter name="blackGamma" type="float">
-</parameter>
-<parameter name="whiteGamma" type="float">
-</parameter>
-</method>
 <field name="BOLD"
  type="int"
  transient="false"

graphics/java/android/graphics/Typeface.java

@@ -180,6 +180,8 @@ public class Typeface {
      *
      * @param blackGamma gamma coefficient for black text
      * @param whiteGamma gamma coefficient for white text
+     *
+     * @hide - this is just for calibrating devices, not for normal apps
      */
     public static native void setGammaForText(float blackGamma, float whiteGamma);
 }