mustash: enable GPU Compositing in renderer

content/renderer/render_widget_window_tree_client_factory.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 "content/renderer/render_widget_window_tree_client_factory.h"
 
 #include "base/logging.h"
 #include "base/macros.h"
 #include "components/mus/public/interfaces/window_tree.mojom.h"
 #include "content/common/render_widget_window_tree_client_factory.mojom.h"
@@ skipping 34 matching lines @@
   void Create(mojo::ApplicationConnection* connection,
               mojo::InterfaceRequest<mojom::RenderWidgetWindowTreeClientFactory>
                   request) override {
     bindings_.AddBinding(this, request.Pass());
   }
 
   // mojom::RenderWidgetWindowTreeClientFactory implementation.
   void CreateWindowTreeClientForRenderWidget(
       uint32_t routing_id,
       mojo::InterfaceRequest<mus::mojom::WindowTreeClient> request) override {
-    new RenderWidgetMusConnection(routing_id, request.Pass());
+    RenderWidgetMusConnection* connection =
+        RenderWidgetMusConnection::GetOrCreate(routing_id);
+    connection->Bind(request.Pass());
   }
 
   mojo::WeakBindingSet<mojom::RenderWidgetWindowTreeClientFactory> bindings_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetWindowTreeClientFactoryImpl);
 };
 
 }  // namespace
 
 void CreateRenderWidgetWindowTreeClientFactory() {
   new RenderWidgetWindowTreeClientFactoryImpl;
 }
 
 }  // namespace content