Add a Display and ContextProvider concept to mojom, use to recreate

services/surfaces/surfaces_service_application.h

 // Copyright 2014 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.
 
 #ifndef SERVICES_SURFACES_SURFACES_SERVICE_APPLICATION_H_
 #define SERVICES_SURFACES_SURFACES_SERVICE_APPLICATION_H_
 
 #include "base/macros.h"
 #include "base/timer/timer.h"
 #include "cc/surfaces/surface_manager.h"
 #include "mojo/common/tracing_impl.h"
 #include "mojo/public/cpp/application/application_delegate.h"
 #include "mojo/public/cpp/application/interface_factory.h"
+#include "mojo/services/surfaces/public/interfaces/display.mojom.h"
+#include "services/surfaces/display_impl.h"
 #include "services/surfaces/surfaces_impl.h"
 #include "services/surfaces/surfaces_scheduler.h"
 
 namespace mojo {
 class ApplicationConnection;
 }
 
 namespace surfaces {
 
 class SurfacesServiceApplication
     : public mojo::ApplicationDelegate,
+      public mojo::InterfaceFactory<mojo::DisplayFactory>,
       public mojo::InterfaceFactory<mojo::Surface>,
+      public DisplayImpl::Client,
       public SurfacesImpl::Client,
       public SurfacesScheduler::Client {
  public:
   SurfacesServiceApplication();
   ~SurfacesServiceApplication() override;
 
   // ApplicationDelegate implementation.
   void Initialize(mojo::ApplicationImpl* app) override;
   bool ConfigureIncomingConnection(
       mojo::ApplicationConnection* connection) override;
 
+  // InterfaceFactory<DisplayFactory> implementation.
+  void Create(mojo::ApplicationConnection* connection,
+              mojo::InterfaceRequest<mojo::DisplayFactory> request) override;
+
   // InterfaceFactory<Surface> implementation.
   void Create(mojo::ApplicationConnection* connection,
               mojo::InterfaceRequest<mojo::Surface> request) override;
 
-  // SurfacesImpl::Client implementation.
+  // DisplayImpl::Client implementation.
   void OnVSyncParametersUpdated(base::TimeTicks timebase,
                                 base::TimeDelta interval) override;
   void FrameSubmitted() override;
   void SetDisplay(cc::Display*) override;
   void OnDisplayBeingDestroyed(cc::Display* display) override;
 
   // SurfacesScheduler::Client
   void Draw() override;
 
  private:
   cc::SurfaceManager manager_;
   uint32_t next_id_namespace_;
   cc::Display* display_;
   scoped_ptr<SurfacesScheduler> scheduler_;
   mojo::TracingImpl tracing_;
 
   DISALLOW_COPY_AND_ASSIGN(SurfacesServiceApplication);
 };
 
 }  // namespace surfaces
 
 #endif  //  SERVICES_SURFACES_SURFACES_SERVICE_APPLICATION_H_