Replace uses of GR_DEBUG by SK_DEBUG.

BUG=None
R=bsalomon@google.com, robertphillips@google.com

Author: tfarina@chromium.org

Review URL: https://chromiumcodereview.appspot.com/23137022

git-svn-id: http://skia.googlecode.com/svn/trunk@10978 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/gl/GrGLProgramDesc.h b/src/gpu/gl/GrGLProgramDesc.h
index 8c441b0..495a225 100644
--- a/src/gpu/gl/GrGLProgramDesc.h
+++ b/src/gpu/gl/GrGLProgramDesc.h
@@ -14,9 +14,13 @@
 
 class GrGpuGL;
 
-// optionally compile the experimental GS code. Set to GR_DEBUG so that debug build bots will
-// execute the code.
-#define GR_GL_EXPERIMENTAL_GS GR_DEBUG
+#ifdef SK_DEBUG
+  // Optionally compile the experimental GS code. Set to SK_DEBUG so that debug build bots will
+  // execute the code.
+  #define GR_GL_EXPERIMENTAL_GS 1
+#else
+  #define GR_GL_EXPERIMENTAL_GS 0
+#endif
 
 
 /** This class describes a program to generate. It also serves as a program cache key. Very little