Remove GrRefCnt.h in favor of SkRefCnt.h

This removes GrRefCnt.h with all its tyepdefs and #defines and just switch them
to the Sk* equivalents.

GrSafeSetNull was promoted to SkSafeSetNull in SkRefCnt.h.

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

Author: tfarina@chromium.org

Review URL: https://chromiumcodereview.appspot.com/23904003

git-svn-id: http://skia.googlecode.com/svn/trunk@11151 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/GrAARectRenderer.cpp b/src/gpu/GrAARectRenderer.cpp
index b104df5..8d5851f 100644
--- a/src/gpu/GrAARectRenderer.cpp
+++ b/src/gpu/GrAARectRenderer.cpp
@@ -6,7 +6,6 @@
  */
 
 #include "GrAARectRenderer.h"
-#include "GrRefCnt.h"
 #include "GrGpu.h"
 #include "gl/GrGLEffect.h"
 #include "GrTBackendEffectFactory.h"
@@ -295,8 +294,8 @@
 };
 
 void GrAARectRenderer::reset() {
-    GrSafeSetNull(fAAFillRectIndexBuffer);
-    GrSafeSetNull(fAAStrokeRectIndexBuffer);
+    SkSafeSetNull(fAAFillRectIndexBuffer);
+    SkSafeSetNull(fAAStrokeRectIndexBuffer);
 }
 
 static const uint16_t gFillAARectIdx[] = {