color blindness enhancement

This is an attempt at improving the experience of
users with color vision impairement.

At this time this feature can only be enabled for
debugging:

  adb shell service call SurfaceFlinger 1014 i32 PARAM

  with PARAM:
   0 : disabled
   1 : protanomaly/protanopia simulation
   2 : deuteranomaly/deuteranopia simulation
   3 : tritanopia/tritanomaly simulation
  11, 12, 13: same as above w/ attempted correction/enhancement

The enhancement algorithm tries to spread the "error"
such that tones that would otherwise appear similar can be
distinguished.

Bug: 9465644

Change-Id: I860f7eed0cb81f54ef9cf24ad78155b6395ade48
diff --git a/services/surfaceflinger/RenderEngine/Program.h b/services/surfaceflinger/RenderEngine/Program.h
index 91bb3db..36bd120 100644
--- a/services/surfaceflinger/RenderEngine/Program.h
+++ b/services/surfaceflinger/RenderEngine/Program.h
@@ -70,6 +70,9 @@
     /* location of the projection matrix uniform */
     GLint mProjectionMatrixLoc;
 
+    /* location of the color matrix uniform */
+    GLint mColorMatrixLoc;
+
     /* location of the texture matrix uniform */
     GLint mTextureMatrixLoc;