Apply gamma correction to font rendering.

Change-Id: I1b05f40e356221b2a5eb9400e67d77ecd98ed6c4
diff --git a/libs/hwui/Android.mk b/libs/hwui/Android.mk
index 8ed3d7b..0469508 100644
--- a/libs/hwui/Android.mk
+++ b/libs/hwui/Android.mk
@@ -6,6 +6,7 @@
 ifeq ($(USE_OPENGL_RENDERER),true)
 	LOCAL_SRC_FILES:= \
 		FontRenderer.cpp \
+		GammaFontRenderer.cpp \
 		GradientCache.cpp \
 		LayerCache.cpp \
 		Matrix.cpp \