Clean unused parameters, disable warnings

Change-Id: Iddb872f53075dd022eeef45265594d1c6a9e2bc0
diff --git a/libs/hwui/Program.h b/libs/hwui/Program.h
index 4f94afc..bc0f211 100644
--- a/libs/hwui/Program.h
+++ b/libs/hwui/Program.h
@@ -207,7 +207,7 @@
      * the fragment shader. When this method returns true, the program should
      * be provided with a modulation color.
      */
-    bool setColor(const float r, const float g, const float b, const float a) {
+    bool setColorModulate(const float a) {
         modulate = a < COLOR_COMPONENT_THRESHOLD;
         return modulate;
     }
@@ -217,7 +217,7 @@
      * the fragment shader. When this method returns true, the program should
      * be provided with a modulation color.
      */
-    bool setAlpha8Color(const float r, const float g, const float b, const float a) {
+    bool setAlpha8ColorModulate(const float r, const float g, const float b, const float a) {
         modulate = a < COLOR_COMPONENT_THRESHOLD || r > COLOR_COMPONENT_INV_THRESHOLD ||
                 g > COLOR_COMPONENT_INV_THRESHOLD || b > COLOR_COMPONENT_INV_THRESHOLD;
         return modulate;