Fork cc::OutputSurface into cc::CompositorFrameSink.

blimp/client/app/compositor/browser_compositor.cc

 // Copyright 2016 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 "blimp/client/app/compositor/browser_compositor.h"
 
 #include "blimp/client/public/compositor/compositor_dependencies.h"
 #include "blimp/client/support/compositor/blimp_context_provider.h"
 #include "cc/output/context_provider.h"
 
 namespace blimp {
 namespace client {
 
 BrowserCompositor::BrowserCompositor(
     CompositorDependencies* compositor_dependencies)
     : BlimpEmbedderCompositor(compositor_dependencies) {}
 
 BrowserCompositor::~BrowserCompositor() = default;
 
 void BrowserCompositor::SetAcceleratedWidget(gfx::AcceleratedWidget widget) {
   scoped_refptr<cc::ContextProvider> provider;
 
   if (widget != gfx::kNullAcceleratedWidget) {
     provider = BlimpContextProvider::Create(
         widget, compositor_dependencies()->GetGpuMemoryBufferManager());
   }
 
-  SetContextProvider(provider);
+  SetContextProvider(std::move(provider));
 }
 
 void BrowserCompositor::DidCompleteSwapBuffers() {
   if (!did_complete_swap_buffers_.is_null()) {
     did_complete_swap_buffers_.Run();
   }
 }
 
 }  // namespace client
 }  // namespace blimp