Mozart: Directly associate the renderer with the view tree.

services/ui/view_manager/view_tree_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/ui/view_manager/view_tree_impl.h"
 
 #include "base/bind.h"
 #include "services/ui/view_manager/view_registry.h"
 #include "services/ui/view_manager/view_tree_state.h"
 
 namespace view_manager {
 
 ViewTreeImpl::ViewTreeImpl(ViewRegistry* registry, ViewTreeState* state)
     : registry_(registry), state_(state) {}
 
 ViewTreeImpl::~ViewTreeImpl() {}
 
 void ViewTreeImpl::GetToken(const GetTokenCallback& callback) {
   callback.Run(state_->view_tree_token()->Clone());
 }
 
 void ViewTreeImpl::GetServiceProvider(
     mojo::InterfaceRequest<mojo::ServiceProvider> service_provider) {
   service_provider_bindings_.AddBinding(this, service_provider.Pass());
 }
 
+void ViewTreeImpl::SetRenderer(
+    mojo::InterfaceHandle<mojo::gfx::composition::Renderer> renderer) {
+  registry_->SetRenderer(
+      state_, mojo::gfx::composition::RendererPtr::Create(std::move(renderer)));
+}
+
 void ViewTreeImpl::RequestLayout() {
   registry_->RequestLayout(state_);
 }
 
 void ViewTreeImpl::SetRoot(
     uint32_t root_key,
     mojo::InterfaceHandle<mojo::ui::ViewOwner> root_view_owner) {
   registry_->SetRoot(state_, root_key, root_view_owner.Pass());
 }
 
@@ skipping 15 matching lines @@
 }
 
 void ViewTreeImpl::ConnectToService(
     const mojo::String& service_name,
     mojo::ScopedMessagePipeHandle client_handle) {
   registry_->ConnectToViewTreeService(state_, service_name,
                                       client_handle.Pass());
 }
 
 }  // namespace view_manager