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/GrOvalRenderer.h b/src/gpu/GrOvalRenderer.h
index 8c47e9a..b58abb7 100644
--- a/src/gpu/GrOvalRenderer.h
+++ b/src/gpu/GrOvalRenderer.h
@@ -10,7 +10,6 @@
 
 #include "GrContext.h"
 #include "GrPaint.h"
-#include "GrRefCnt.h"
 
 class GrContext;
 class GrDrawTarget;
@@ -21,7 +20,7 @@
 /*
  * This class wraps helper functions that draw ovals and roundrects (filled & stroked)
  */
-class GrOvalRenderer : public GrRefCnt {
+class GrOvalRenderer : public SkRefCnt {
 public:
     SK_DECLARE_INST_COUNT(GrOvalRenderer)
 
@@ -52,7 +51,7 @@
 
     GrIndexBuffer* fRRectIndexBuffer;
 
-    typedef GrRefCnt INHERITED;
+    typedef SkRefCnt INHERITED;
 };
 
 #endif // GrOvalRenderer_DEFINED