Replace GR_*_BUILD by their SK_BUILD_FOR_* equivalents.

BUG=None
TEST=None, no functional changes.
R=bsalomon@google.com, robertphillips@google.com

Author: tfarina@chromium.org

Review URL: https://chromiumcodereview.appspot.com/24253009

git-svn-id: http://skia.googlecode.com/svn/trunk@11457 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/Makefile.old b/Makefile.old
index 47029c4..cd5a9e8 100644
--- a/Makefile.old
+++ b/Makefile.old
@@ -132,7 +132,7 @@
 	
 else
 	LINKER_OPTS += -lpng -lfreetype -lrt
-	DEFINES += -DSK_BUILD_FOR_UNIX -DSK_ENABLE_LIBPNG -DGR_LINUX_BUILD=1
+	DEFINES += -DSK_BUILD_FOR_UNIX -DSK_ENABLE_LIBPNG
 	ifeq ($(SKIA_MESA),true)
 		LINKER_OPTS += -lOSMesa -lGLU
 		DEFINES += -DSK_MESA