Replace many skia::RefPtr with sk_sp<> in cc/

cc/test/test_context_provider.cc

Index: cc/test/test_context_provider.cc
diff --git a/cc/test/test_context_provider.cc b/cc/test/test_context_provider.cc
index 6fbf5eb6bc57cd2d3a4f88b094ee1459de982c74..e01f77e9e2c053363bc938e20b1f43730eee4f40 100644
--- a/cc/test/test_context_provider.cc
+++ b/cc/test/test_context_provider.cc
@@ -111,9 +111,8 @@ class GrContext* TestContextProvider::GrContext() {
   if (gr_context_)
     return gr_context_.get();
 
-  skia::RefPtr<const GrGLInterface> gl_interface =
-      skia::AdoptRef(GrGLCreateNullInterface());
-  gr_context_ = skia::AdoptRef(GrContext::Create(
+  sk_sp<const GrGLInterface> gl_interface(GrGLCreateNullInterface());
+  gr_context_ = sk_sp<::GrContext>(GrContext::Create(
       kOpenGL_GrBackend,
       reinterpret_cast<GrBackendContext>(gl_interface.get())));