Update from https://crrev.com/309415

cc/test/test_context_provider.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/test/test_context_provider.h"
 
 #include <set>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 77 matching lines @@
   return &support_;
 }
 
 class GrContext* TestContextProvider::GrContext() {
   DCHECK(bound_);
   DCHECK(context_thread_checker_.CalledOnValidThread());
 
   if (gr_context_)
     return gr_context_.get();
 
-  auto null_interface = skia::AdoptRef(GrGLCreateNullInterface());
+  skia::RefPtr<const GrGLInterface> null_interface =
+      skia::AdoptRef(GrGLCreateNullInterface());
   gr_context_ = skia::AdoptRef(GrContext::Create(
       kOpenGL_GrBackend,
       reinterpret_cast<GrBackendContext>(null_interface.get())));
   return gr_context_.get();
 }
 
 bool TestContextProvider::IsContextLost() {
   DCHECK(bound_);
   DCHECK(context_thread_checker_.CalledOnValidThread());
 
@@ skipping 63 matching lines @@
   DCHECK(memory_policy_changed_callback_.is_null() || cb.is_null());
   memory_policy_changed_callback_ = cb;
 }
 
 void TestContextProvider::SetMaxTransferBufferUsageBytes(
     size_t max_transfer_buffer_usage_bytes) {
   context3d_->SetMaxTransferBufferUsageBytes(max_transfer_buffer_usage_bytes);
 }
 
 }  // namespace cc