Mozart: Directly associate the renderer with the view tree.

services/gfx/compositor/renderer_impl.cc

 // Copyright 2015 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 "services/gfx/compositor/renderer_impl.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 
 namespace compositor {
@@ skipping 15 matching lines @@
 }
 
 void RendererImpl::SetRootScene(
     mojo::gfx::composition::SceneTokenPtr scene_token,
     uint32 scene_version,
     mojo::RectPtr viewport) {
   engine_->SetRootScene(state_, scene_token.Pass(), scene_version,
                         viewport.Pass());
 }
 
+void RendererImpl::ResetRootScene() {
+  engine_->ResetRootScene(state_);
+}
+
 void RendererImpl::HitTest(mojo::PointPtr point,
                            const HitTestCallback& callback) {
   engine_->HitTest(state_, point.Pass(), callback);
 }
 
 }  // namespace compositor