Make GrGLDefines.h be a private header

Review URL: http://codereview.appspot.com/6198048/



git-svn-id: http://skia.googlecode.com/svn/trunk@3851 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/gl/debug/GrShaderObj.h b/src/gpu/gl/debug/GrShaderObj.h
index 200c8b6..0e11237 100644
--- a/src/gpu/gl/debug/GrShaderObj.h
+++ b/src/gpu/gl/debug/GrShaderObj.h
@@ -10,6 +10,7 @@
 #define GrShaderObj_DEFINED
 
 #include "GrFakeRefObj.h"
+#include "../GrGLDefines.h"
 
 ////////////////////////////////////////////////////////////////////////////////
 class GrShaderObj : public GrFakeRefObj {