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/GrAtlas.cpp b/src/gpu/GrAtlas.cpp
index 9776326..865478b 100644
--- a/src/gpu/GrAtlas.cpp
+++ b/src/gpu/GrAtlas.cpp
@@ -40,7 +40,7 @@
 
 #define BORDER      1
 
-#if GR_DEBUG
+#ifdef SK_DEBUG
     static int gCounter;
 #endif
 
@@ -63,7 +63,7 @@
 
     fMaskFormat = format;
 
-#if GR_DEBUG
+#ifdef SK_DEBUG
 //    GrPrintf(" GrAtlas %p [%d %d] %d\n", this, plotX, plotY, gCounter);
     gCounter += 1;
 #endif
@@ -74,7 +74,7 @@
 
     delete fRects;
 
-#if GR_DEBUG
+#ifdef SK_DEBUG
     --gCounter;
 //    GrPrintf("~GrAtlas %p [%d %d] %d\n", this, fPlot.fX, fPlot.fY, gCounter);
 #endif