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/GrTextureAccess.cpp b/src/gpu/GrTextureAccess.cpp
index 122a209..e4b0786 100644
--- a/src/gpu/GrTextureAccess.cpp
+++ b/src/gpu/GrTextureAccess.cpp
@@ -10,7 +10,7 @@
 #include "GrTexture.h"
 
 GrTextureAccess::GrTextureAccess() {
-#if GR_DEBUG
+#ifdef SK_DEBUG
     memcpy(fSwizzle, "void", 5);
     fSwizzleMask = 0xbeeffeed;
 #endif