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/gyp@11151 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gpu.gypi b/gpu.gypi
index 810a367..1714759 100644
--- a/gpu.gypi
+++ b/gpu.gypi
@@ -25,7 +25,6 @@
       '<(skia_include_path)/gpu/GrPathRendererChain.h',
       '<(skia_include_path)/gpu/GrPoint.h',
       '<(skia_include_path)/gpu/GrRect.h',
-      '<(skia_include_path)/gpu/GrRefCnt.h',
       '<(skia_include_path)/gpu/GrRenderTarget.h',
       '<(skia_include_path)/gpu/GrResource.h',
       '<(skia_include_path)/gpu/GrSurface.h',
diff --git a/public_headers.gypi b/public_headers.gypi
index d770349..022f679 100644
--- a/public_headers.gypi
+++ b/public_headers.gypi
@@ -34,7 +34,6 @@
       'gpu/GrTypes.h',
       'gpu/GrFontScaler.h',
       'gpu/GrResource.h',
-      'gpu/GrRefCnt.h',
       'gpu/GrKey.h',
       'gpu/GrOvalRenderer.h',
       'gpu/GrEffectUnitTest.h',